ENERGY STAR Computer Specification, Version 5.0

ENERGY STAR

Program Requirements

for Computers

Version 5.0

Table of Contents

Partner Commitments 2

Commitments 2

Performance for Special Distinction 4

Eligibility Criteria 5

Section 1: Definitions 5

Section 2: Qualifying Products 9

Section 3: Energy Efficiency and Power Management Criteria 9

Section 4: Test Procedures 16

Section 5: Effective Date 19

Section 6: Future Specification Revisions 19

Appendix A: ENERGY STAR Test Procedure for Determining the Power Use of

Computers in Off, Sleep, Idle and Game Consoles in Sleep and Off 20

Appendix B: Sample Calculations 26

ENERGY STAR Program Requirements for Computers: Version 5.0 1

ENERGY STAR

Program Requirements

for Computers

Partner Commitments

Version 5.0

Commitments

The following are the terms of the ENERGY STAR Partnership Agreement as it pertains to the

manufacturing of ENERGY STAR qualified computers. The ENERGY STAR Partner must adhere to the

following program requirements:

• comply with current ENERGY STAR Eligibility Criteria,

defining the performance criteria that must be

met for use of the ENERGY STAR

certification mark on computers and specifying the testing criteria

for computers. EPA may, at its discretion, conduct tests on products that are referred to as ENERGY

STAR qualified. These products may be obtained on the open market, or voluntarily supplied by

Partner at EPA’s request;

• comply with current ENERGY STAR Identity Guidelines,

describing how the ENERGY STAR marks

and name may be used. Partner is responsible for adhering to these guidelines and for ensuring that

its authorized representatives, such as advertising agencies, dealers, and distributors, are also in

compliance;

• work with resellers of Partner’s products to help ensure that these products remain in compliance with

ENERGY STAR requirements. Any party within the distribution channel of an ENERGY STAR

qualified computer product that alters the power profile of a product after its date of manufacture

through hardware or software modifications must ensure that the product continues to meet the

ENERGY STAR requirements before delivering this product to the end customer. If the product no

longer meets the requirements, it may not bear the ENERGY STAR mark;

• qualify at least one ENERGY STAR computer model within one year of activating the computers

portion of the agreement. When Partner qualifies the product, it must meet the specification (e.g., Tier

1 or 2) in effect at that time;

• provide clear and consistent labeling of ENERGY STAR qualified computers. The ENERGY STAR

mark must be clearly displayed:

1. On the top or front of the product. Labeling on the top or front of the product may be permanent or

temporary. All temporary labeling must be affixed to the top or front of the product with an

adhesive or cling-type application;

Electronic Labeling Option

: Manufacturers have the option of using an alternative electronic

labeling approach in place of this product labeling requirement, as long it meets the following

requirements:

− The ENERGY STAR mark in cyan, black, or white (as described in "The ENERGY STAR

Identity Guidelines" available at www.energystar.gov/logos

) appears at system start-up. The

electronic mark must display for a minimum of 5 seconds;

− The ENERGY STAR mark must be at least 10% of the screen by area, may not be smaller

than 76 pixels x 78 pixels, and must be legible.

EPA will consider alternative proposals regarding approach, duration, or size for electronic

labeling on a case-by-case basis.

ENERGY STAR Program Requirements for Computers: Version 5.0 2

2. In product literature (i.e., user manuals, spec sheets, etc.);

3. On product packaging for products sold at retail; and

4. On the manufacturer’s Internet site where information about ENERGY STAR qualified models is

displayed:

− If information concerning ENERGY STAR is provided on the Partner Web site, as specified by

the ENERGY STAR Web Linking Policy (this document can be found in the Partner

Resources section on the ENERGY STAR Web site at www.energystar.gov

), EPA may

provide links where appropriate to the Partner Web site;

• agree to complete steps to educate users of their products about the benefits of power management

by including the following information, in addition to that described in the User Information

Requirements found in the ENERGY STAR Eligibility Criteria (Section 3.C), with each computer (i.e.,

in the user manual or on a box insert):

1. Energy saving potential;

2. Financial saving potential;

3. Environmental benefits;

4. Information on ENERGY STAR and a link to www.energystar.gov

; and

5. ENERGY STAR logo (used in accordance with "The ENERGY STAR Identity Guidelines"

available at www.energystar.gov/logos

In addition, a link should be made available to www.energystar.gov/powermanagement

from computer

product pages, product specifications, and related content pages.

At the manufacturer’s request, EPA will supply suggested facts and figures related to the above

criteria, template elements, or a complete template suitable for use in user guides or box inserts.

• provide to EPA, on at least an annual basis, an updated list of ENERGY STAR qualified computer

models. Once the Partner submits its first list of ENERGY STAR qualified computer models, the

Partner will be listed as an ENERGY STAR Partner. Partner must provide at least an annual update in

order to remain on the list of participating product manufacturers;

• provide to EPA, on an annual basis, unit shipment data or other market indicators to assist in

determining the market penetration of ENERGY STAR. Specifically, Partner must submit the total

number of ENERGY STAR qualified computers shipped (in units by model) or an equivalent

measurement as agreed to in advance by EPA and Partner. Partner is also encouraged to provide

ENERGY STAR qualified unit shipment data segmented by meaningful product characteristics (e.g.,

capacity, size, speed, or other as relevant), total unit shipments for each model in its product line, and

percent of total unit shipments that qualify as ENERGY STAR. The data for each calendar year should

be submitted to EPA, preferably in electronic format, no later than the following March and may be

provided directly from the Partner or through a third party. The data will be used by EPA only for

program evaluation purposes and will be closely controlled. Any information used will be masked by

EPA so as to protect the confidentiality of the Partner;

• notify EPA of a change in the designated responsible party or contacts for computers within 30 days;

• participate in the ENERGY STAR Verification Testing Program. EPA will select computers each year

for verification testing. The manufacturer of each selected product will be required to conduct testing of

the specified products as outlined in the Verification Testing Guidelines and Procedures Manual.

These requirements will be effective with Version 5.0, and may be modified and updated outside the

official specification revision process. The manual for this program will be available on the ENERGY

STAR Office Equipment Partner Resources page on the ENERGY STAR website. If the sample fails

to meet the performance requirements of the ENERGY STAR specification, the failure will be

ENERGY STAR Program Requirements for Computers: Version 5.0 3

addressed under EPA’s product failure and dispute protocol and if applicable, the procedure for

delisting products.

Performance for Special Distinction

In order to receive additional recognition and/or support from EPA for its efforts within the

Partnership, the ENERGY STAR Partner may consider the following voluntary measures and should keep

EPA informed on the progress of these efforts:

• consider energy efficiency improvements in company facilities and pursue the ENERGY STAR mark

for buildings;

• purchase ENERGY STAR qualified products. Revise the company purchasing or procurement

specifications to include ENERGY STAR.

Provide procurement officials’ contact information to EPA for

periodic updates and coordination. Circulate general ENERGY STAR qualified product information to

employees for use when purchasing products for their homes;

• ensure the power management feature is enabled on all ENERGY STAR qualified displays and

computers in use in company facilities, particularly upon installation and after service is performed;

• provide general information about the ENERGY STAR

program to employees whose jobs are relevant

to the development, marketing, sales, and service of current ENERGY STAR qualified product models;

• provide a simple plan to EPA outlining specific measures Partner plans to undertake beyond the

program requirements listed above. By doing so, EPA may be able to coordinate, communicate,

and/or promote Partner’s activities, provide an EPA representative, or include news about the event in

the ENERGY STAR newsletter, on the ENERGY STAR Web pages, etc. The plan may be as simple

as providing a list of planned activities or planned milestones that Partner would like EPA to be aware

of. For example, activities may include: (1) increase the availability of ENERGY STAR qualified

products by converting the entire product line within two years to meet ENERGY STAR guidelines; (2)

demonstrate the economic and environmental benefits of energy efficiency through special in-store

displays twice a year; (3) provide information to users (via the Web site and user’s manual) about

energy-saving features and operating characteristics of ENERGY STAR qualified products: and (4)

build awareness of the ENERGY STAR Partnership and brand identity by collaborating with EPA on

one print advertorial and one live press event;

• provide quarterly, written updates to EPA as to the efforts undertaken by Partner to increase

availability of ENERGY STAR qualified products, and to promote awareness of ENERGY STAR and

its message;

• join EPA's SmartWay Transport Partnership to improve the environmental performance of the

company's shipping operations. SmartWay Transport works with freight carriers, shippers, and other

stakeholders in the goods movement industry to reduce fuel consumption, greenhouse gases, and air

pollution. For more information on SmartWay, visit www.epa.gov/smartway;

• join EPA's Climate Leaders Partnership to inventory and reduce greenhouse gas emissions.

Through

participation, companies create a credible record of their accomplishments and receive EPA

recognition

as corporate environmental leaders. For more information on Climate Leaders, visit

www.epa.gov/climateleaders;

• join EPA’s Green Power Partnership. EPA's Green Power Partnership encourages organizations to

buy

green power as a way to reduce the environmental impacts associated with traditional fossil fuel-

based electricity use. The partnership includes a diverse set of organizations including Fortune 500

companies,

small and medium businesses, government institutions as well as a growing number of

colleges and

universities, visit http://www.epa.gov/grnpower.

ENERGY STAR Program Requirements for Computers: Version 5.0 4

ENERGY STAR

Program Requirements

for Computers

Eligibility Criteria (Version 5.0)

Below is the Version 5.0 product specification for ENERGY

STAR qualified computers. A product must

meet all of the identified criteria to earn the ENERGY STAR.

1) Definitions: Below are the definitions of the relevant terms in this document.

A. Computer

: A device which performs logical operations and processes data. Computers are

composed of, at a minimum: (1) a central processing unit (CPU) to perform operations; (2) user

input devices such as a keyboard, mouse, digitizer or game controller; and (3) a computer display

screen to output information. For the purposes of this specification, computers include both

stationary and portable units, including desktop computers, gaming consoles, integrated desktop

computers, notebook computers, small-scale servers, thin clients, and workstations. Although

computers must be capable of using input devices and computer displays, as noted in numbers 2

and 3 above, computer systems do not need to include these devices on shipment to meet this

definition.

Components

B. Computer Display

: A display screen and its associated electronics encased in a single housing, or

within the computer housing (e.g., notebook or integrated desktop computer), that is capable of

displaying output information from a computer via one or more inputs, such as a VGA, DVI,

Display Port, and/or IEEE 1394. Examples of computer display technologies are the cathode-ray

tube (CRT) and liquid crystal display (LCD).

C. Discrete Graphics Processing Unit (GPU)

: A graphics processor with a local memory controller

interface and a local, graphics-specific memory.

D. External Power Supply: A component contained in a separate physical enclosure external to the

computer casing and designed to convert line voltage ac input from the mains to lower dc

voltage(s) for the purpose of powering the computer. An external power supply must connect to

the computer via a removable or hard-wired male/female electrical connection, cable, cord or

other wiring.

E. Internal Power Supply:

A component internal to the computer casing and designed to convert ac

voltage from the mains to dc voltage(s) for the purpose of powering the computer components.

For the purposes of this specification, an internal power supply must be contained within the

computer casing but be separate from the main computer board. The power supply must connect

to the mains through a single cable with no intermediate circuitry between the power supply and

the mains power. In addition, all power connections from the power supply to the computer

components, with the exception of a DC connection to a computer display in an Integrated

Desktop Computer, must be internal to the computer casing (i.e., no external cables running from

the power supply to the computer or individual components). Internal dc-to-dc converters used to

convert a single dc voltage from an external power supply into multiple voltages for use by the

computer are not considered internal power supplies.

ENERGY STAR Program Requirements for Computers: Version 5.0 5

Computer Types

F. Desktop Computer

: A computer where the main unit is intended to be located in a permanent

location, often on a desk or on the floor. Desktops are not designed for portability and utilize an

external computer display, keyboard, and mouse. Desktops are designed for a broad range of

home and office applications.

G. Small-Scale Server

: A computer that typically uses desktop components in a desktop form factor,

but is designed primarily to be a storage host for other computers. A computer must have the

following characteristics to be considered a Small-Scale Server:

• Designed in a pedestal, tower, or other form factor similar to those of desktop computers such

that all data processing, storage, and network interfacing is contained within one box/product;

• Intended to be operational 24 hours/day and 7 days/week, and unscheduled downtime is

extremely low (on the order of hours/year);

• Capable of operating in a simultaneous multi-user environment serving several users through

networked client units; and

• Designed for an industry accepted operating system for home or low-end server applications

(e.g., Windows Home Server, Mac OS X Server, Linux, UNIX, Solaris).

Small-Scale Servers are designed to perform functions such as providing network infrastructure

services (e.g., archiving) and hosting data/media. These products are not designed to process

information for other systems or run web servers as a primary function.

This specification does not cover Computer Servers as defined in the ENERGY STAR Version 1.0

Computer Server specification. Small-Scale Servers covered by this specification are limited to

computers marketed for non-datacenter operation (e.g. homes, small offices).

H. Game Console:

A standalone computer-like device whose primary use is to play video games.

Game consoles use a hardware architecture based in part on typical computer components (e.g.,

processors, system memory, video architecture, optical and/or hard drives, etc.). The primary

input for game consoles are special hand held controllers rather than the mouse and keyboard

used by more conventional computer types. Game consoles are also equipped with audio visual

outputs for use with televisions as the primary display, rather than (or in addition to) an external or

integrated display. These devices do not typically use a conventional PC operating system, but

often perform a variety of multimedia functions such as: DVD/CD playback, digital picture viewing,

and digital music playback. Handheld gaming devices, typically battery powered and intended for

use with an integral display as the primary display, are not covered by this specification.

I. Integrated Desktop Computer

: A desktop system in which the computer and computer display

function as a single unit which receives its ac power through a single cable. Integrated desktop

computers come in one of two possible forms: (1) a system where the computer display and

computer are physically combined into a single unit; or (2) a system packaged as a single system

where the computer display is separate but is connected to the main chassis by a dc power cord

and both the computer and computer display are powered from a single power supply. As a

subset of desktop computers, integrated desktop computers are typically designed to provide

similar functionality as desktop systems.

J. Thin Client:

An independently-powered computer that relies on a connection to remote computing

resources to obtain primary functionality. Main computing (e.g., program execution, data storage,

interaction with other Internet resources, etc.) takes place using the remote computing resources.

Thin Clients covered by this specification are limited to devices with no rotational storage media

integral to the computer. The main unit of a Thin Client covered by this specification must be

intended for location in a permanent location (e.g. on a desk) and not for portability.

ENERGY STAR Program Requirements for Computers: Version 5.0 6

K. Notebook Computer: A computer designed specifically for portability and to be operated for

extended periods of time either with or without a direct connection to an ac power source.

Notebooks must utilize an integrated computer display and be capable of operation off of an

integrated battery or other portable power source. In addition, most notebooks use an external

power supply and have an integrated keyboard and pointing device. Notebook computers are

typically designed to provide similar functionality to desktops, including operation of software

similar in functionality as that used in desktops. For the purposes of this specification, docking

stations are considered accessories and therefore, the performance levels associated with

notebooks presented in Section 3, below, do not include them. Tablet PCs, which may use touch-

sensitive screens along with or instead of other input devices, are considered Notebook

Computers in this specification.

L. Workstation

: A high-performance, single-user computer typically used for graphics, CAD, software

development, financial and scientific applications among other compute intensive tasks. To qualify

as a workstation, a computer must:

• Be marketed as a workstation;

• Have a mean time between failures (MTBF) of at least 15,000 hours based on either Bellcore

TR-NWT-000332, issue 6, 12/97 or field collected data; and

• Support error-correcting code (ECC) and/or buffered memory.

In addition, a workstation must meet three of the following six optional characteristics:

• Have supplemental power support for high-end graphics (i.e., PCI-E 6-pin 12V supplemental

power feed);

• System is wired for greater than x4 PCI-E on the motherboard in addition to the graphics

slot(s) and/or PCI-X support;

• Does not support Uniform Memory Access (UMA) graphics;

• Includes 5 or more PCI, PCIe or PCI-X slots;

• Capable of multi-processor support for two or more processors (must support physically

separate processor packages/sockets, i.e., not met with support for a single multi core

processor); and/or

• Be qualified by at least 2 Independent Software Vendor (ISV) product certifications; these

certifications can be in process, but must be completed within 3 months of qualification.

Operational Modes

M. Off Mode

: The power consumption level in the lowest power mode which cannot be switched off

(influenced) by the user and that may persist for an indefinite time when the appliance is

connected to the main electricity supply and used in accordance with the manufacturer’s

instructions. For systems where ACPI standards are applicable, Off Mode correlates to ACPI

System Level S5 state.

N. Sleep Mode

: A low power state that the computer is capable of entering automatically after a

period of inactivity or by manual selection. A computer with sleep capability can quickly “wake” in

response to network connections or user interface devices with a latency of ≤ 5 seconds from

initiation of wake event to system becoming fully usable including rendering of display. For

systems where ACPI standards are applicable, Sleep mode most commonly correlates to ACPI

System Level S3 (suspend to RAM) state.

O. Idle State

: The state in which the operating system and other software have completed loading, a

user profile has been created, the machine is not asleep, and activity is limited to those basic

ENERGY STAR Program Requirements for Computers: Version 5.0 7

applications that the system starts by default.

P. Active State: The state in which the computer is carrying out useful work in response to a) prior or

concurrent user input or b) prior or concurrent instruction over the network. This state includes

active processing, seeking data from storage, memory, or cache, including idle state time while

awaiting further user input and before entering low power modes.

Q. Typical Energy Consumption (TEC)

: A method of testing and comparing the energy performance

of computers, which focuses on the typical electricity consumed by a product while in normal

operation during a representative period of time. For Desktops and Notebooks, the key criterion of

the TEC approach is a value for typical annual electricity use, measured in kilowatt-hours (kWh),

using measurements of average operational mode power levels scaled by an assumed typical

usage model (duty cycle). For Workstations, requirements are based on a TEC power value

calculated from operational mode power levels, maximum power, and an assumed duty cycle.

Networking and Power Management

R. Network Interface

: The components (hardware and software) whose primary function is to make

the computer capable of communicating over one or more network technologies. Examples of

Network Interfaces are IEEE 802.3 (Ethernet) and IEEE 802.11 (Wi-Fi).

S. Wake Event

: A user, scheduled, or external event or stimulus that causes the computer to

transition from Sleep or Off to active mode of operation. Examples of wake events include, but are

not limited to: movement of the mouse, keyboard activity, controller input, real-time clock event, or

a button press on the chassis, and in the case of external events, stimulus conveyed via a remote

control, network, modem, etc.

T. Wake On LAN (WOL):

Functionality which allows a computer to wake from Sleep or Off when

directed by a network request via Ethernet.

U. Full Network Connectivity

: The ability of the computer to maintain network presence while in sleep

and intelligently wake when further processing is required (including occasional processing

required to maintain network presence). Maintaining network presence may include obtaining

and/or defending an assigned interface or network address, responding to requests from other

nodes on the network, or maintaining existing network connections, all while in the sleep state. In

this fashion, presence of the computer, its network services and applications, is maintained even

though the computer is in sleep. From the vantage point of the network, a sleeping computer with

full network connectivity is functionally equivalent to an idle computer with respect to common

applications and usage models. Full network connectivity in sleep is not limited to a specific set of

protocols but can cover applications installed after initial installation.

Marketing and Shipment Channels

V. Enterprise Channels: Sales channels normally used by large and medium-sized business,

government organizations, educational institutions, or other organizations purchasing computers

used in managed client/server environments.

W. Model Number

: A unique marketing name that applies to a specific hardware/software

configuration (i.e. operating system, types or processors, memory, GPU, etc.) that is either pre-

defined, or a configuration that is selected by the customer.

X. Model Name

: A marketing name that includes reference to both the PC model family number, a

short description of the product, or branding references.

ENERGY STAR Program Requirements for Computers: Version 5.0 8

Y. Product Family: A high-level description referring to a group of computers typically sharing one

chassis/motherboard combination that often contains hundreds of possible hardware and software

configurations.

2) Qualifying Products: Computers must meet the computer definition as well as one of the product

type definitions provided in Section 1, above, to qualify as ENERGY STAR. The following table

provides a list of the types of computers that are (and are not) eligible for ENERGY STAR.

Products Covered by Version 5.0

Specification

Products Not Covered by Version 5.0

Specification

• Desktop Computers

•

Integrated Desktop Computers

• Notebook Computers

• Workstations

• Game Consoles

• Small-Scale Servers

• Thin Clients

•

Computer Servers (as defined in Version

1.0 Computer Server specification)

•

Handhelds, PDAs, and Smartphones

3) Energy Efficiency and Power Management Criteria: Computers must meet the requirements below

to qualify as ENERGY STAR. The Version 5.0 effective date is covered in Section 5 of this

specification.

(A) Power Supply Efficiency Requirements - Requirements are applicable to all product categories

covered by the ENERGY STAR Computer Specification:

Computers Using an Internal Power Supply: 85% minimum efficiency at 50% of rated output

and 82% minimum efficiency at 20% and 100% of rated output, with Power Factor >

0.9 at 100%

of rated output.

Computers Using an External Power Supply: External Power Supplies sold with ENERGY

STAR computers must be ENERGY STAR qualified or meet the no-load and active mode

efficiency levels provided in the ENERGY STAR Program Requirements for Single Voltage

External Ac-Ac and Ac-Dc Power Supplies, Version 2.0. The ENERGY STAR specification and

qualified product list can be found at www.energystar.gov/powersupplies. Note: This performance

requirement also applies to multiple voltage output external power supplies as tested in

accordance to the Internal Power Supply test method referenced in Section 4, below.

(B) Efficiency and Performance Requirements:

1) Desktop, Integrated Desktop, and Notebook Levels:

Desktop Categories for TEC Criteria: For the purposes of determining TEC levels, desktops

and integrated desktops must qualify under Categories A, B, C, or D as defined below:

Category A: All desktop computers that do not meet the definition of Category B, Category

C, or Category D below will be considered under Category A for ENERGY STAR

qualification.

Category B: To qualify under Category B, desktops must

have:

 Equal to 2 Physical Cores; and

 Greater than or equal to 2 gigabytes (GB) of System Memory.

ENERGY STAR Program Requirements for Computers: Version 5.0 9

Category C: To qualify under Category C, desktops must

have:

 Greater than 2 Physical Cores.

In addition to the requirement above, models qualifying under Category C must be

configured with a minimum of 1 of the following 2 characteristics:

 Greater than or equal to 2 gigabytes (GB) of System Memory; and/or

 A Discrete GPU.

Category D: To qualify under Category D, desktops must

have:

 Greater than or equal to 4 Physical Cores.

In addition to the requirement above, models qualifying under Category D must be

configured with a minimum of 1 of the following 2 characteristics:

 Greater than or equal to 4 gigabytes (GB) of System Memory; and/or

 A Discrete GPU with a Frame Buffer Width greater than 128-bit.

Notebook Categories for TEC Criteria: For the purposes of determining TEC levels,

notebooks must qualify under Categories A, B, or C as defined below:

Category A: All notebook computers that do not meet the definition of Category B or

Category C below will be considered under Category A for ENERGY STAR qualification.

Category B: To qualify under Category B, notebooks must

have:

 A Discrete GPU.

Category C: To qualify under Category C, notebooks must

have:

 Greater than or equal to 2 Physical Cores;

 Greater than or equal to 2 gigabytes (GB) of System Memory; and

 A Discrete GPU with a Frame Buffer Width greater than 128-bit.

TEC (Desktop and Notebook product categories): The following tables indicate the required

TEC levels for the 5.0 Specification. Table 1 below lists TEC requirements for Version 5.0,

while Table 2 gives weightings for each operational mode by product type. TEC will be

determined using the formula below:

TEC

= (8760/1000) * (P

off

* T

off

+ P

sleep

* T

sleep

+ P

idle

* T

idle

)

where all P

are power values in watts, all T

are Time values in % of year, and the TEC E

TEC

in units of kWh and represents annual energy consumption based on mode weightings in Table

ENERGY STAR Program Requirements for Computers: Version 5.0 10

Table 1: E

TEC

Requirement – Desktops and Notebooks

Desktops and Integrated Computers

(kWh)

Notebook Computers (kWh)

TEC (kWh) Category A: ≤ 148.0

Category B: ≤ 175.0

Category C: ≤ 209.0

Category D: ≤ 234.0

Category A: ≤ 40.0

Category B: ≤ 53.0

Category C: ≤ 88.5

Capability Adjustments

Memory 1 kWh (per GB over base)

Base Memory:

Categories A, B and C

Category D:

2 GB

4 GB

0.4 kWh (per GB over 4)

Premium Graphics (for

Discrete GPUs with

specified Frame Buffer

Widths)

Cat. A, B:

Cat. C, D:

35 kWh (FB Width ≤ 128-bit)

50 kWh (FB Width > 128-bit)

Cat. B

: 3 kWh (FB Width > 64-bit)

Additional Internal

Storage

25 kWh 3 kWh

Table 2: Operational Mode Weighting – Desktops and Notebooks

Desktop Notebook

Conventional Proxying* Conventional Proxying*

Toff 55% 40% 60% 45%

Tsleep 5% 30% 10% 30%

Tidle 40% 30% 30% 25%

Note: Proxying refers to a computer that maintains Full Network Connectivity as defined in Section 1 of this

specification. For a system to qualify under the proxying weightings above, it must meet a non-proprietary proxying

standard that has been approved by the EPA and the European Union as meeting the goals of ENERGY STAR.

Such approval must be in place prior to submittal of product data for qualification. See Section 3.C, Qualifying

Computers with Power Management Capabilities, for further information and testing requirements.

2) Workstation Levels:

TEC

(Workstation product category): The following tables indicate the required P

TEC

levels

for the 5.0 Specification. Table 3 below lists P

TEC

requirements for Version 5.0, while Table 4

gives weightings for each operational mode. P

TEC

will be determined using the formula below:

TEC

= 0.35*P

off

+ 0.10 *P

sleep

+ 0.55* P

idle

where all P

are power values in watts.

Table 3: P

TEC

Requirement - Workstations

TEC

≤ 0.28*[P

max

+ (# HDD * 5)]

Table 4: Operational Mode Weighting - Workstations

Toff 35%

Tsleep 10%

Tidle 55%

Note: Weightings are included in the P

TEC

formula, above.

ENERGY STAR Program Requirements for Computers: Version 5.0 11

Multiple Graphics Devices (Workstations): Workstations that meet ENERGY STAR

requirements with a single graphics device may also qualify a configuration with more than one

graphics device, provided the additional hardware configuration is identical with the exception

of the additional graphics device(s). The use of multiple graphics includes, but is not limited to,

driving multiple displays and ganging for high-performance, multi-GPU configurations (e.g. ATI

Crossfire, NVIDIA SLI). In such cases, and until such time as SPECviewperf

supports multiple

graphics threads, manufacturers may submit the test data for the workstation with the single

graphics device for both configurations without retesting the system.

3) Game Console Levels:

Table 5: Game Console Requirements (TBD) – Effective July 1, 2010

Note: To allow for time to further refine requirements and commence efforts to engage game publishers in the

ENERGY STAR process, development of game console requirements will continue through the close of the

calendar year, 2008. This effort will continue building on the concepts and requirements present in previous drafts

of the Computer specification, and EPA will release a next draft of Game Console requirements shortly. The

continued work on game consoles will not impact the effective date for the remainder of the computer specification.

Once development of these game console requirements is completed, the final requirements will be wrapped into

the Final Version 5.0 Specification. No changes to the 5.0 requirements for other product types will be made.

4) Small-Scale Server Levels:

For the purposes of determining Idle state levels, Small-Scale Servers must qualify under

Categories A or B, as defined below:

Category A: All Small-Scale Servers that do not meet the definition of Category B will be

considered under Category A for ENERGY STAR qualification.

Category B: To qualify under Category B Small-Scale Servers must have:

• Processor(s) with greater than 1 physical core or greater than 1 discrete processor; and

• Minimum of 1 gigabyte of system memory.

Table 6: Small-Scale Server Efficiency Requirements

Small-Scale Server Operational Mode Power Requirements

Off Mode:

≤ 2.0 W

Idle State:

Category A:

Category B:

≤ 50.0 W

≤ 65.0 W

Capability Additional Power Allowance

Wake On LAN (WOL)

(Applies only if computer is shipped with WOL enabled)

+ 0.7 W for Off

ENERGY STAR Program Requirements for Computers: Version 5.0 12

5) Thin Client Levels

Thin Client Categories for Idle Criteria: For the purposes of determining Idle levels, Thin

Clients must qualify under Categories A or B as defined below:

Category A: All Thin Clients that do not meet the definition of Category B, below, will be

considered under Category A for ENERGY STAR qualification.

Category B: To qualify under Category B, Thin Clients must



Support local multimedia encode/decode.

Table 7 : Thin Client Efficiency Requirements

Thin Client Operational Mode Power Requirements

Off Mode:

≤ 2 W

Sleep Mode (if applicable):

≤ 2 W

Idle State:

Category A:

Category B:

≤ 12.0 W

≤ 15.0 W

Capability Additional Power Allowance

Wake On LAN (WOL)

(Applies only if computer is shipped

with WOL enabled)

+ 0.7 W for Sleep

+ 0.7 W for Off

detailed in Table 8, below, and be tested as shipped.

Table 8: Power Management Requirements

Specification

Requirement

Applicable to

Shipment Requirements

Sleep Mode

Shipped with a Sleep mode which is set

to activate within 30 minutes (1 hr for

Game Consoles) of user inactivity.

Computers shall reduce the speed of any

active 1 Gb/s Ethernet network links

when transitioning to Sleep or Off. (Note:

Game Consoles may transition to a full

off mode within the timeframe above in

lieu of sleep.)

Desktop Computers √

Integrated Desktop Computers √

Notebook Computers √

Workstations √

Game Consoles √

Small-Scale Servers

Thin Clients

Display Sleep

Mode

Shipped with the display’s Sleep mode

set to activate within 15 minutes of user

inactivity.

Desktop Computers √

Integrated Desktop Computers √

Notebook Computers √

Workstations √

Game Consoles √

Small-Scale Servers (if computer

display is present)

√

Thin Clients √

ENERGY STAR Program Requirements for Computers: Version 5.0 13

Network Requirements for Power Management

Wake on LAN

(WOL)

Computers with Ethernet capability shall

have the ability to enable and disable

WOL for Sleep mode.

Desktop Computers √

Integrated Desktop Computers √

Notebook Computers √

Workstations √

Game Consoles

Small-Scale Servers √

Thin Clients (Only applies if

software updates from the

centrally managed network are

conducted while the unit is in

sleep or off mode. Thin Clients

whose standard framework for

upgrading client software does

not require off-hours scheduling

are exempt from the

requirement.)

√

Applies to computers shipped through

Enterprise Channels, only:

Computers with Ethernet capability must

meet one of the following requirements:



be shipped with Wake On LAN

(WOL) enabled from the Sleep

mode when operating on ac

power (i.e. notebooks may

automatically disable WOL when

disconnected from the mains); or



provide control to enable WOL

that is sufficiently-accessible

from both the client operating

system user interface and over

the network if computer is

shipped to enterprise without

WOL enabled.

Desktop Computers √

Integrated Desktop Computers √

Notebook Computers √

Workstations √

Game Consoles

Small-Scale Servers √

Thin Clients (Only applies if

software updates from the

centrally managed network are

conducted while the unit is in

sleep or off mode. Thin Clients

whose standard framework for

upgrading client software does

not require off-hours scheduling

are exempt from the

requirement.)

√

Wake

Management

Applies to computers shipped through

Enterprise Channels, only:

Computers with Ethernet capability shall

be capable of both remote (via network)

and scheduled wake events from Sleep

mode (e.g. Real Time Clock).

Manufacturers shall ensure, where the

manufacturer has control (i.e., configured

through hardware settings rather than

software settings), that these settings can

be managed centrally, as the client

wishes, with tools provided by the

manufacturer.

Desktop Computers √

Integrated Desktop Computers √

Notebook Computers √

Workstations √

Game Consoles

Small-Scale Servers √

Thin Clients √

For all computers with WOL enabled, any directed packet filters shall be enabled and set to an

industry standard default configuration. Until one (or more) standards are agreed upon, partners are

asked to provide their direct packet filter configurations to EPA for publication on the Website to

stimulate discussion and development of standard configurations.

ENERGY STAR Program Requirements for Computers: Version 5.0 14

Qualifying Computers with Power Management Capabilities: The following requirements should

be followed when determining whether models should be qualified with or without WOL:

Off: Computers shall be tested and reported as shipped for Off. Models that will be shipped with

WOL enabled for Off shall be tested with WOL enabled. Likewise, products shipped with WOL

disabled for Off shall be tested with WOL disabled.

Sleep: Computers shall be tested and reported as shipped for Sleep. Models sold through

enterprise channels, as defined in Section 1, definition V, shall be tested, qualified, and shipped

with WOL enabled/disabled based on the requirements in Table 8. Products going directly to

consumers through normal retail channels only are not required to be shipped with WOL enabled

from Sleep, and may be tested, qualified, and shipped with WOL either enabled or disabled.

Proxying: Desktop, Integrated Desktop, and Notebook Computers shall be tested and reported

for Idle, Sleep, and Off with proxying features enabled or disabled as shipped. For a system to

qualify using TEC weightings for proxying, it must meet a proxying standard that has been

approved by the EPA and European Union as meeting the goals of ENERGY STAR. Such

approval must be in place prior to submittal of product data for qualification.

Customer Software and Management Service Pre-Provisioning:

The Partner will remain responsible for testing products and qualifying them as they ship them. If

the product meets and is qualified as ENERGY STAR at this point, it can be labeled as such.

If the Partner is hired by a customer to load a custom image, the Partner must take the following

steps:

 The Partner must let the customer know that their product may not meet ENERGY STAR

with the custom image loaded (a sample letter is available for use from the ENERGY

STAR website that can be shared with customers).

 The Partner must encourage their customer to test the product for ENERGY STAR

compliance.

 The Partner must encourage their customer, should the product no longer meet ENERGY

STAR, to make use of EPA's free technical assistance that can assist with Power

Management performance. Please see tools as well as contact information at:

www.energystar.gov/fedofficeenergy

Although EPA believes that Partners in partnership with EPA can help ensure their products

continue to be leadership products when it comes to efficiency once deployed, EPA is committed

to helping to reduce the likelihood that custom images will disrupt a product’s ability to meet

ENERGY STAR requirements. For example, EPA is engaging in federal desktop core

configuration discussions with the intention of facilitating the development of a core configuration

for Federal Agencies that supports energy efficiency. In April 2008, EPA also launched the

ENERGY STAR Low Carbon IT Campaign in an effort to get more businesses and organizations

to implement power management. More information on the campaign can be found at:

www.energystar.gov/lowcarbonit

User Information Requirement: In order to ensure that purchasers/users are properly informed on

the benefits of power management, the manufacturer will include with each computer, one of the

following:

• Information on ENERGY STAR and the benefits of power management in either a hard copy or

electronic copy of the user manual. This information should be near the front of the user guide; or

• A package or box insert on ENERGY STAR and the benefits of power management.

Either option must at least include the following information:

• Notice that the computer has been shipped enabled for power management and what the time

settings are (either the default settings for the system or a note stating that the default settings for

ENERGY STAR Program Requirements for Computers: Version 5.0 15

the computer comply with the ENERGY STAR requirements of less than 15 min of user inactivity

for the display and less than 30 min of inactivity for the computer, recommended by the ENERGY

STAR program for optimal energy savings); and

• How to properly wake the computer from Sleep mode.

(D) Voluntary Requirements

User Interface: Although not mandatory, manufacturers are strongly recommended to design

products in accordance with the Power Control User Interface Standard — IEEE 1621 (formally known

as “Standard for User Interface Elements in Power Control of Electronic Devices Employed in

Office/Consumer Environments”). Compliance with IEEE 1621 will make power controls more

consistent and intuitive across all electronic devices. For more information on the standard see

http://eetd.LBL.gov/Controls.

4) Test Procedures: Manufacturers are required to perform tests and self-certify those models that meet

the ENERGY

STAR guidelines.

• In performing these tests, partner agrees to use the test procedures provided in Table 9, below.

• The test results must be reported to EPA or the European Commission, as appropriate.

Additional testing and reporting requirements are provided below.

A. Number of Units Required for TEC or Idle Testing

: Manufacturers may initially test a single unit for

qualification. If the initial unit tested is less than or equal to the applicable requirement for TEC or

Idle but falls within 10% of that level, one additional unit of the same model with an identical

configuration must also be tested. Manufacturers shall report test values for both units. To qualify

as ENERGY STAR, both units must meet the maximum TEC or Idle level for that product and that

product category.

Note: This additional testing is only required for TEC qualification (Desktops, Integrated Desktops,

Notebooks, Workstations) and Idle qualification (Small-Scale Servers, Thin Clients) – only one unit

is required to be tested for Sleep and Off if such requirements apply. The following examples

further illustrate this approach:

1. A Category A Desktop must meet a TEC level of 148.0 kWh or less, making 133.2 kWh the

10% threshold for additional testing.

• If the first unit is measured at 130 kWh, no more testing is needed and the model qualifies

(130 kWh is 12% more efficient than the specification and is therefore “outside” the 10%

threshold).

• If the first unit is measured at 133.2 kWh, no more testing is needed and the model

qualifies (133.2 kWh is exactly 10% more efficient than the specification).

• If the first unit is measured at 135 kWh, then an additional unit must be tested to

determine qualification (135 kWh is only 9% more efficient than the specification and is

“within” the 10% threshold).

• If the two units are then tested at 135 and 151 kWh, the model does not qualify

ENERGY STAR—even though the average is 143 kWh — because one of the values

exceeds the ENERGY STAR specification.

• If the two units are then tested at 135 and 147 kWh, the model does qualify

as ENERGY

STAR because both values meet the ENERGY STAR specification of 148.0 kWh.

2. A Category A Small-Scale Server must meet an Idle level of 50 watts or less, making

45 Watts the 10% threshold for additional testing. The following scenarios could then

occur when testing a model for qualification:

ENERGY STAR Program Requirements for Computers: Version 5.0 16

• If the first unit is measured at 44 watts, no more testing is needed and the model qualifies

(44 watts is 12% more efficient than the specification and is therefore “outside” the 10%

threshold).

• If the first unit is measured at 45 watts, no more testing is needed and the model qualifies

(45 watts is exactly 10% more efficient than the specification).

• If the first unit is measured at 47 watts, then an additional unit must be tested to determine

qualification (47 Watts is only 6% more efficient than the specification and is “within” the

10% threshold).

• If the two units are then tested at 47 and 51 watts, the model does not qualify as

ENERGY STAR—even though the average is 49 watts— because one of the values (51)

exceeds the ENERGY STAR specification.

• If the two units are then tested at 47 and 49 watts, the model does qualify as ENERGY

STAR because both values meet the ENERGY STAR specification of 50 watts.

B. Models Capable of Operating at Multiple Voltage/Frequency Combinations:

Manufacturers shall

test their products based on the market(s) in which the models will be sold and promoted as

ENERGY STAR qualified.

For products that are sold as ENERGY STAR in multiple international markets and, therefore,

rated at multiple input voltages, the manufacturer must test at and report the required measured

power consumption and efficiency values at all relevant voltage/frequency combinations. For

example, a manufacturer that is shipping the same model to the United States and Europe must

measure, meet the specification, and report test values at both 115 Volts/60 Hz and 230 Volts/50

Hz in order to qualify the model as ENERGY STAR in both markets. If a model qualifies as

ENERGY STAR at only one voltage/frequency combination (e.g., 115 Volts/60 Hz), then it may

only be qualified and promoted as ENERGY STAR in those regions that support the tested

voltage/frequency combination (e.g., North America and Taiwan).

ENERGY STAR Program Requirements for Computers: Version 5.0 17

Table 9: Test Procedures

Product

Category

Specification

Requirement

Test Protocol Source

All Computers

Power Supply

Efficiency

IPS: Generalized Internal

Power Supply Efficiency

Test Protocol Rev. 6.4.2

EPS: ENERGY STAR

Test Method for External

Power Supplies

Note: Should any

information/procedures

in addition to those

described by the Internal

Power Supply Efficiency

Protocol be required in

order to test an Internal

Power Supply, partners

must make available to

EPA upon request the

test setup used to

acquire IPS data used in

a product submittal.

IPS:

www.efficientpowersupplies.org

EPS:

www.energystar.gov/powersupplies

Desktop,

Integrated, and

Notebook

Computers

TEC

(from

measurements of Off

Mode, Sleep Mode,

and Idle State)

ENERGY STAR

Computer Test Method

(Version 5.0), Section III

Appendix A

Workstations

TEC

(from

measurements of Off

Mode, Sleep Mode,

Idle State, and

Maximum Power)

ENERGY STAR

Computer Test Method

(Version 5.0), Section III-

Game Consoles Off Mode, and

Sleep/Auto-Off

ENERGY STAR

Computer Test Method

(Version 5.0), Section V

Small-Scale

Servers

Off Mode and Idle

State

ENERGY STAR

Computer Test Method

(Version 5.0) , Section III

Thin Clients

Off Mode, Sleep

Mode, and Idle State

ENERGY STAR

Computer Test Method

(Version 5.0) , Section III

C. Qualifying Families of Products: Models that are unchanged or that differ only in finish from those

sold in a previous year may remain qualified without the submission of new test data assuming the

specification remains unchanged. If a product model is offered in the market in multiple

configurations or styles, as a product “family” or series, the partner may report and qualify the

product under a single model number, as long as all of the models within that family or series meet

ENERGY STAR Program Requirements for Computers: Version 5.0 18

meet either of the following requirements:

• Computers that are built on the same platform and are identical in every respect except for

housing and color may be qualified through submission of test data for a single, representative

model.

• If a product model is offered in the market in multiple configurations, the partner may report

and qualify the product under a single unique model identifier number that represents the

highest power configuration available in the family, rather than reporting each and every

individual model in the family; there must not be higher consuming configurations of the same

product model than the representative configuration. In this case, the highest configuration

would consist of: the highest power processor, the maximum memory configuration, the

highest power GPU, etc. For systems which meet the definition for multiple categories (as

defined in section 3.B) depending on the specific configuration, manufacturers will have to

submit the highest power configuration for each category under which they would like the

system to qualify. For example, a system that could be configured either as a Category A or a

Category B desktop would require a submittal of the highest power configuration for both

categories in order to qualify as ENERGY STAR. If a product could be configured to meet all

three categories, it would then have to submit data for the highest power configuration in all

categories. Manufacturers will be held accountable for any efficiency claims made about all

other models in the family, including those not tested or for which data was not reported.

All units/configurations associated with a product model designation, for which a Partner is

seeking ENERGY STAR qualification, must meet the ENERGY STAR requirements. If a Partner

wishes to qualify configurations of a model for which non-qualifying alternative configurations

exist, the Partner must assign the qualifying configurations an identifier in the model name/number

that is unique to ENERGY STAR Qualified configurations. This identifier must be used

consistently in association with the qualifying configurations in marketing/sales materials and on

the ENERGY STAR list of qualified products (e.g. model A1234 for baseline configurations and

A1234-ES for ENERGY STAR qualifying configurations).

5) Effective Date: The date that manufacturers may begin to qualify products as ENERGY STAR will be

defined as the effective date of the agreement. The ENERGY STAR Version 5.0 Computers

Specification effective date is July 1, 2009. All products (except for Game Consoles), including models

originally qualified under Version 4.0, with a date of manufacture on or after July 1, 2009 must meet

the Version 5.0 requirements in order to qualify for ENERGY STAR. Game Consoles with a date of

manufacture on or after July 1, 2010 must meet the Version 5.0 requirements in order to qualify for

ENERGY STAR. Any previously executed agreement on the subject of ENERGY STAR qualified

computers shall be terminated effective June 30, 2009.

6) Future Specification Revisions: EPA reserves the right to revise the specification should

technological and/or market changes affect its usefulness to consumers or industry or its impact on

the environment. In keeping with current policy, revisions to the specification will be discussed with

stakeholders. In the event of a specification revision, please note that ENERGY

STAR qualification is

not automatically granted for the life of a product model. To qualify as ENERGY

STAR, a product

model must meet the ENERGY

STAR specification in effect on the model’s date of manufacture.

ENERGY STAR Program Requirements for Computers: Version 5.0 19

APPENDIX A:

ENERGY STAR Test Procedure for Determining the

Power Use of Computers/Game Consoles in Off, Sleep, and Idle

The following protocol should be followed when measuring power consumption levels of computers/game

consoles for compliance with the Off, Sleep, and Idle levels provided in the ENERGY STAR Version 5.0

Computer Specification. Partners must measure a representative sample of the configuration as shipped

to the customer. However, the Partner does not need to consider power consumption changes that may

result from component additions, BIOS and/or software settings made by the computer user after sale of

product. This procedure is intended to be followed in order and the mode being tested is labeled where

appropriate.

Computers must be tested with configuration and settings as shipped, unless otherwise specified in the

test procedure in this Appendix A. Steps requiring alternative setup are marked with an asterisk ( “ * ”).

Definitions

Unless otherwise specified, all terms used in this document are consistent with the definitions

contained in the Version 5.0 ENERGY STAR

Eligibility Criteria for Computers.

UUT

UUT is an acronym for “unit under test,” which in this case refers to the computer being tested.

UPS

UPS is an acronym for “Uninterruptible Power Supply,” which refers to a combination of converters,

switches and energy storage means, for example batteries, constituting a power supply for

maintaining continuity of load power in case of input power failure.

II. Testing Requirements

Approved Meter

Approved meters will include the following attributes

• Power resolution of 1 mW or better;

• An available current crest factor of 3 or more at its rated range value; and

• Lower bound on the current range of 10mA or less.

The following attributes in addition to those above are suggested:

• Frequency response of at least 3 kHz; and

• Calibration with a standard that is traceable to the U.S. National Institute of Standards and

Technology (NIST).

It is also desirable for measurement instruments to be able to average power accurately over any user

selected time interval (this is usually done with an internal math’s calculation dividing accumulated

energy by time within the meter, which is the most accurate approach). As an alternative, the

measurement instrument would have to be capable of integrating energy over any user selected time

interval with an energy resolution of less than or equal to 0.1 mWh and integrating time displayed with

a resolution of 1 second or less.

Characteristics of approved meters taken from IEC 62301 Ed 1.0: Measurement of Standby Power

ENERGY STAR Program Requirements for Computers: Version 5.0 20

Accuracy

Measurements of power of 0.5 W or greater shall be made with an uncertainty of less than or equal to

2% at the 95% confidence level. Measurements of power of less than 0.5 W shall be made with an

uncertainty of less than or equal to 0.01 W at the 95% confidence level. The power measurement

instrument shall have a resolution of:

• 0.01 W or better for power measurements of 10 W or less;

• 0.1 W or better for power measurements of greater than 10 W up to 100 W; and

• 1 W or better for power measurements of greater than 100 W.

All power figures should be in watts and rounded to the second decimal place. For loads greater than

or equal to 10 W, three significant figures shall be reported.

Test Conditions

Supply Voltage:

North America/Taiwan:

Europe/Australia/New

Zealand:

Japan:

115 (± 1%) Volts AC, 60 Hz (± 1%)

230 (± 1%) Volts AC, 50 Hz (± 1%)

100 (± 1%) Volts AC, 50 Hz (± 1%)/60 Hz (± 1%)

Note: For products rated for > 1.5 kW maximum

power, the voltage range is ± 4%

Total Harmonic Distortion

(THD) (Voltage):

< 2% THD (< 5% for products which are rated for > 1.5 kW maximum

power)

Ambient Temperature:

23°C ± 5°C

Relative Humidity:

10 – 80 %

(Reference IEC 62301: Household Electrical Appliances – Measurement of Standby Power, Sections 4.2, 4.3,

4.4)

Test Configuration

Power consumption of a computer shall be measured and tested from an ac source to the UUT.

If the UUT supports Ethernet, it must be connected to an Ethernet network switch capable of the

UUT’s highest and lowest network speeds. The network connection must be live during all tests.

III.

Test Procedure for Off, Sleep and Idle for All Computer Products

Measurement of ac power consumption of a computer should be conducted as follows:

UUT Preparation

1. Record the manufacturer and model name of the UUT.

2. Ensure that the UUT is connected to network resources as detailed below, and that the UUT

maintains this live connection for the duration of testing, disregarding brief lapses when

transitioning between link speeds.

a. Desktops, Integrated Desktops, and Notebooks shall be connected to a live Ethernet

(IEEE 802.3) network switch as specified in Section II., “Test Configuration,” above. The

computer must maintain this live connection to the switch for the duration of testing,

disregarding brief lapses when transitioning between link speeds. Computers without

Ethernet capability must maintain a live wireless connection to a wireless router or

network access point for the duration of testing.

b. Small-Scale Servers shall be connected to a live Ethernet (IEEE 802.3) network switch as

specified in Section II., “Test Configuration,” above, and that the connection is live.

ENERGY STAR Program Requirements for Computers: Version 5.0 21

c. Thin Clients shall be connected to a live server via a live Ethernet (IEEE 802.3) network

switch and shall run intended terminal/remote connection software.

3. Connect an approved meter capable of measuring true power to an ac line voltage source set to

the appropriate voltage/frequency combination for the test.

4. Plug the UUT into the measurement power outlet on the meter. No power strips or UPS units

should be connected between the meter and the UUT. For a valid test to take place the meter

should remain in place until all Off, Sleep, and Idle power data is recorded.

5. Record the ac voltage and frequency.

6. Boot computer and wait until the operating system has fully loaded. If necessary, run the initial

operating system setup and allow all preliminary file indexing and other one-time/periodic

processes to complete.

7. Record basic information about the computer’s configuration – computer type, operating system

name and version, processor type and speed, and total and available physical memory, etc.

8. Record basic information about the video card or graphics chipset (if applicable) - video

card/chipset name, frame buffer width, resolution, amount of onboard memory, and bits per pixel.

9. * Ensure that the UUT is configured as shipped including all accessories, WOL enabling, and

software shipped by default. UUT should also be configured using the following requirements for

all tests:

a. Desktop systems shipped without accessories should be configured with a standard

mouse, keyboard and external computer display.

b. Notebooks should include all accessories shipped with the system, and need not include

a separate keyboard or mouse when equipped with an integrated pointing device or

digitizer.

c. Notebooks should have the battery pack(s) removed for all tests. For systems where

operation without a battery pack is not a supported configuration, the test may be

performed with fully charged battery pack(s) installed, making sure to report this

configuration in the test results.

d. Small-Scale Servers and Thin Clients shipped without accessories should be configured

with a standard mouse, keyboard and external computer display (if server has display

output functionality).

e. For Computers with

Ethernet capability, power to wireless radios should be turned off for

all tests. This applies to wireless network adapters (e.g., 802.11) or device-to-device

wireless protocols. For Computers without

Ethernet capability, power to a wireless LAN

radio (e.g. IEEE 802.11) should remain on during testing and must maintain a live

wireless connection to a wireless router or network access point, which supports the

highest and lowest data speeds of the client radio, for the duration of testing.

f. Primary hard drives may not be power managed (“spun-down”) during Idle testing unless

containing non-volatile cache integral to the drive (e.g. “hybrid” hard drives). If more than

one internal hard drive is installed as shipped, the non-primary, internal hard drive(s) may

be tested with hard drive power management enabled as shipped. If these additional

drives are not power managed when shipped to customers, they must be tested without

such features implemented.

10. * The following guidelines should be followed to configure power settings for computer displays

(adjusting no other power management settings):

a. For computers with external computer displays (most desktops):

use the computer display

power management settings to prevent the display from powering down to ensure it stays

on for the full length of the Idle test as described below.

b. For computers with integrated computer displays (notebooks and integrated systems):

use

the power management settings to set the display to power down after 1 minute.

11. Shut down the UUT.

ENERGY STAR Program Requirements for Computers: Version 5.0 22

Off Mode Testing

12. With the UUT shut down and in Off, set the meter to begin accumulating true power values at an

interval of less than or equal to 1 reading per second. Accumulate power values for 5 additional

minutes and record the average (arithmetic mean) value observed during that 5 minute period.

Idle Mode Testing

13. Switch on the computer and begin recording elapsed time, starting either when the computer is

initially switched on, or immediately after completing any log in activity necessary to fully boot the

system. Once logged in with the operating system fully loaded and ready, close any open windows

so that the standard operational desktop screen or equivalent ready screen is displayed. Between

5 and 15 minutes after the initial boot or log in, set the meter to begin accumulating true power

values at an interval of greater than or equal to 1 reading per second. Accumulate power values

for 5 additional minutes and record the average (arithmetic mean) value observed during that 5

minute period.

Sleep Mode Testing

14. After completing the Idle measurements, place the computer in Sleep mode. Reset the meter (if

necessary) and begin accumulating true power values at an interval of greater than or equal to 1

reading per second. Accumulate power values for 5 additional minutes and record the average

(arithmetic mean) value observed during that 5 minute period.

15. If testing both WOL enabled and WOL disabled for Sleep, wake the computer and change the

WOL from Sleep setting through the operating system settings or by other means. Place the

computer back in Sleep mode and repeat step 14, recording Sleep power necessary for this

alternate configuration.

Reporting Test Results

16. The test results must be reported to EPA or the European Commission, as appropriate, taking

care to ensure that all required information has been included, including modal power values and

eligible capability adjustments for Desktops, Integrated Desktops, and Notebooks.

IV. Maximum Power Test for Workstations

The maximum power for workstations is found by the simultaneous operation of two industry standard

benchmarks: Linpack to stress the core system (e.g., processor, memory, etc.) and SPECviewperf

(latest available version for the UUT) to stress the system’s GPU. Additional information on these

benchmarks, including free downloads, can be found at the URLs found below:

Linpack

http://www.netlib.org/linpack/

SPECviewperf

http://www.spec.org/benchmarks.html#gpc

This test must be repeated three times on the same UUT, and all three measurements must fall within

a ± 2% tolerance relative to the average of the three measured maximum power values.

Measurement of the maximum ac power consumption of a workstation should be conducted as

follows:

UUT Preparation

1. Connect an approved meter capable of measuring true power to an ac line voltage source set to

the appropriate voltage/frequency combination for the test. The meter should be able to store and

Laboratory-grade, full-function meters can integrate values over time and report the average value automatically.

Other meters would require the user to capture a series of changing values every 5 seconds for a five minute period

and then compute the average manually.

ENERGY STAR Program Requirements for Computers: Version 5.0 23

output the maximum power measurement reached during the test or be capable of another

method of determining maximum power.

2. Plug the UUT into the measurement power outlet on the meter. No power strips or UPS units

should be connected between the meter and the UUT.

3. Record the ac voltage.

4. * Boot the computer and, if not already installed, install Linpack and SPECviewperf as indicated

on the above Websites.

5. Set Linpack with all the defaults for the given architecture of the UUT and set the appropriate array

size “n” for maximizing power draw during the test.

6. Ensure all guidelines set by the SPEC organization for running SPECviewperf are being met.

Maximum Power Testing

7. Set the meter to begin accumulating true power values at an interval of less than or equal to 1

reading per second, and begin taking measurements. Run SPECviewperf and as many

simultaneous instances of Linpack as needed to fully stress the system.

8. Accumulate power values until SPECviewperf and all instances have completed running. Record

the maximum power value attained during the test.

Reporting Test Results

9. The test results must be reported to EPA or the European Commission, taking care to ensure that

all required information has been included.

10. Upon submittal of data, manufacturers must also include the following data:

a. Value of the n (the array size) used for Linpack,

b. Number of simultaneous copies of Linpack run during the test,

c. Version of SPECviewperf run for test,

d. All compiler optimizations used in compiling Linpack and SPECviewperf, and

e. A precompiled binary for end users to download and run of both SPECviewperf and

Linpack. These can be distributed either through a centralized standards body such as

SPEC, by the OEM or by a related third party.

V. Test Procedure for All Modes for Game Consoles

Measurement of ac power consumption of a computer should be conducted as follows:

UUT Preparation

1. Record the manufacturer and model name of the UUT.

2. Record basic information about the computer’s configuration – computer type, operating system

name and version, processor type and speed, total and available physical memory, etc.

3. Ensure that the UUT is connected to a TV(s) which support all of the output types supported by

the UUT.

a. For each output that supports APD, repeat step 10 of this procedure.

4. Connect an approved meter capable of measuring true power to an ac line voltage source set to

the appropriate voltage/frequency combination for the test.

5. Plug the UUT into the measurement power outlet on the meter. No power strips or UPS units

should be connected between the meter and the UUT. For a valid test to take place the meter

should remain in place until all power data is recorded.

6. Record the ac voltage and frequency.

7. Turn on the console and wait until the operating system has fully loaded.

8. If necessary, run the initial system setup and allow all preliminary tasks and other one-

time/periodic processes to complete.

9. Ensure that the UUT is configured as shipped including all accessories, power management

settings and software shipped by default.

10. For each applicable output, wait for 15 minutes and ensure the output drops after the prescribed

time.

11. Place the system in a state without the game loaded.

ENERGY STAR Program Requirements for Computers: Version 5.0 24

12. Wait one hour and verify the system goes into a low power state.

13. Bring the console back into its OS loaded state.

14. Load a game and bring it to the games menu.

15. Begin game play and pause the game.

16. Wait one hour and verify the system goes into a low power state. (Applicable after Version 5.0)

17. Shut down the UUT.

Off Mode Testing

18. With the UUT shut down and in Off, set the meter to begin accumulating true power values at an

interval of greater than or equal to 1 reading per second. Accumulate power values for 5 additional

minutes and record the average (arithmetic mean) value observed during that 5 minute period.

Sleep/APD Mode Testing

19. After completing the Off mode measurements, place the computer in it’s Sleep/APD mode. Reset

the meter (if necessary) and begin accumulating true power values at an interval of greater than or

equal to 1 reading per second. Accumulate power values for 5 additional minutes and record the

average (arithmetic mean) value observed during that 5 minute period.

VI. Continuing Verification

This testing procedure describes the method by which a single unit may be tested for compliance. An

ongoing testing process is highly recommended to ensure that products from different production runs

are in compliance with ENERGY STAR.

Laboratory-grade, full-function meters can integrate values over time and report the average value automatically.

Other meters would require the user to capture a series of changing values every 5 seconds for a five minute period

and then compute the average manually.

ENERGY STAR Program Requirements for Computers: Version 5.0 25

APPENDIX B:

Sample Calculations

I. Desktop, Integrated Desktop, Notebook Computers: Below is a sample TEC calculation intended

to show how levels for compliance are determined based on functional adders and operational mode

measurements.

Example: Below is a sample E

TEC

evaluation for a Category A Notebook Computer (integrated GPU, 8

GB Memory Installed, 1 HDD)

1. Measure values using the Appendix A test procedure.

Off = 1W

Sleep = 1.7W

Idle = 10W

2. Determine which Capability Adjustments apply.

Integrated Graphics? Does not apply for Premium Graphics.

8GB Memory installed. Does

meet memory adjustment level: 8 yields a 1.6kWh

adjustment (4 * 0.4kWh).

3. Apply Weightings based on Table 2 to calculate TEC:

Table 2 (for conventional notebook):

Toff

60%

Tsleep

10%

Tidle

30%

TEC

= (8760/1000) * (P

off

* T

off

+ P

sleep

* T

sleep

+ P

idle

* T

idle

)

= (8760/1000) * (P

off

* .60 + P

sleep

* .10 + P

idle

* .30)

= (8760/1000) * (1 * .60 + 1.7 * .10 + 10 * .30)

= 33.03 kWh

4. Determine TEC Requirement for the computer by adding any capability adjustments (step 2)

to the Base TEC requirement (Table1).

Table 1 (for notebooks):

Notebook Computers (kWh)

Category A

Category B

Category C

88.5

ENERGY STAR TEC Requirement = 40 kWh + 1.6kW = 41.6 kWh

5. Compare E

TEC

to the ENERGY STAR TEC Requirement (step 4) to determine if the model

qualifies.

Category A TEC requirement: 41.6 kWh

TEC

: 33.03 kWh

33.03 kWh< 41.6 kWh

Notebook meets ENERGY STAR requirements.

ENERGY STAR Program Requirements for Computers: Version 5.0 26

II. Workstations: Below is a sample P

TEC

calculation for a Workstation with 2 hard drives.

1. Measure values using the Appendix A test procedure.

Off = 2 W

Sleep = 4W

Idle = 80W

Max Power = 180W

2. Note number of Hard Drives installed.

Two hard drives installed during test.

3. Apply Weightings based on Table 4 to calculate P

TEC

Table 4:

Toff

35%

Tsleep

10%

Tidle

55%

TEC

= (.35 * P

off

+ .10 * P

sleep

+ .55 * P

idle

)

= (.35 * 2 + .10 * 4 + .55 * 80)

= 45.10 W

4. Calculate the P

TEC

requirement using the formula in Table 3.

TEC

= 0.28*[Pmax + (# HDD * 5)]

TEC

= 0.28*[180 + 2 * 5)]

TEC

= 53.2

5. Compare the adjusted P

TEC

to the ENERGY STAR levels to determine if the model qualifies.

45.10< 53.2

Workstation meets ENERGY STAR requirements.

ENERGY STAR Program Requirements for Computers: Version 5.0 27