Desktop and notebook computers - Measurement of energy consumption

IEC 62623:2022 covers personal computing products. It applies to desktop and notebook computers as defined in 4.1 that are marketed as final products and that are hereafter referred to as the equipment under test (EUT) or product. This document specifies:
- a test procedure to enable the measurement of the power and/or energy consumption in each of the EUT's power modes;
- formulas for calculating the typical energy consumption (TEC) for a given period (normally annual);
- a majority profile to be used with this document which enables conversion of average power into energy within the TEC formulas;
- a pre-defined format for the presentation of results.
This document does not set any pass/fail criteria for the EUTs. Users of the test results define such criteria. IEC 62623:2022 cancels and replaces the first edition published in 2012. This edition constitutes a technical revision. The first edition of this standard was originally based on ECMA-383. This edition includes the following significant technical changes with respect to the previous edition:
a) Additions to terms & definitions and modification to short & long idle descriptions.
b) Test setup modifications for notebooks where battery pack cannot be removed for testing.
c) Categorisation procedure based on ECMA-389 removed.
d) Replace majority profile with new duty cycle study including new duty cycle attributes for desktop and notebook in a residential and enterprise application.
e) Removal of any reference and test methodology to ENERGY STAR V5.

Ordinateurs de bureau et ordinateurs portables - Mesure de la consommation d'énergie

L'IEC 62623:2022 traite des produits informatiques personnels. Il s'applique aux ordinateurs de bureau et aux ordinateurs portables définis en 4.1, qui sont commercialisés en tant que produits finaux et appelés ci-après matériel à l'essai (EUT, Equipment Under Test) ou produit. Le présent document spécifie:
- une procédure d'essai pour mesurer la consommation de puissance et/ou d'énergie dans chacun des modes d'alimentation de l'EUT;
- des formules pour calculer la consommation d'énergie type (TEC, Typical Energy Consumption) sur une période donnée (annuellement en général);
- le profil majoritaire à utiliser avec le présent document pour convertir la puissance moyenne en énergie dans les formules de TEC;
- un format prédéfini pour la présentation des résultats.
Le présent document n'établit aucun critère de réussite/d'échec pour les EUT. Ces critères sont définis par les utilisateurs des résultats d'essai. L'IEC 62623:2022 annule et remplace la première édition parue en 2012. Cette édition constitue une révision technique. La première édition de la présente norme a été établie sur la base de l'ECMA-383. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) des termes et définitions ont été ajoutés, et les descriptions relatives aux termes attente courte et attente longue ont été modifiées;
b) le montage d'essai a été modifié pour les ordinateurs portables dont le bloc de batteries ne peut pas être retiré pour les essais;
c) la procédure de classification issue de l'ECMA-389 a été supprimée;
d) le profil majoritaire a été remplacé par une nouvelle étude des cycles de service; de nouveaux attributs de cycle de service ont été ajoutés pour les ordinateurs de bureau et les ordinateurs portables destinés à une application domestique et d'entreprise;
e) les références à la spécification et à la méthodologie d'essai ENERGY STAR V5 ont été supprimées.

General Information

Status
Published
Publication Date
26-Apr-2022
Current Stage
PPUB - Publication issued
Completion Date
27-Apr-2022
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IEC 62623
Edition 2.0 2022-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Desktop and notebook computers – Measurement of energy consumption
Ordinateurs de bureau et ordinateurs portables – Mesurage de la consommation
d'énergie
IEC 62623:2022-04(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 62623
Edition 2.0 2022-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Desktop and notebook computers – Measurement of energy consumption
Ordinateurs de bureau et ordinateurs portables – Mesurage de la consommation
d'énergie
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 35.160 ISBN 978-2-8322-1095-6

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 62623:2022 © IEC 2022
CONTENTS

FOREWORD ........................................................................................................................... 5

INTRODUCTION ..................................................................................................................... 7

1 Scope .............................................................................................................................. 8

2 Normative references ...................................................................................................... 8

3 Terms, definitions and abbreviations ............................................................................... 8

3.1 Terms and definitions .............................................................................................. 8

3.2 Abbreviated terms ................................................................................................. 11

4 Specifications for EUT ................................................................................................... 12

4.1 Computer descriptions .......................................................................................... 12

4.1.1 Desktop computer .......................................................................................... 12

4.1.2 Notebook computer ....................................................................................... 12

4.1.3 Two-in-one notebook ..................................................................................... 12

4.1.4 Multiscreen notebook ..................................................................................... 13

4.1.5 Slate/Tablet ................................................................................................... 13

4.1.6 Portable all-in-one computer .......................................................................... 13

4.1.7 Integrated desktop computer ......................................................................... 13

4.2 Power modes ........................................................................................................ 13

4.2.1 Off mode ....................................................................................................... 13

4.2.2 P ................................................................................................................ 14

off

4.2.3 Sleep mode ................................................................................................... 14

4.2.4 P ........................................................................................................... 14

sleep

4.2.5 P .................................................................................................... 14

sleepWoL

4.2.6 Alternative low power mode ........................................................................... 14

4.2.7 P ............................................................................................................ 14

alpm

4.2.8 On mode ........................................................................................................ 14

4.2.9 P ................................................................................................................ 14

4.2.10 Idle modes ..................................................................................................... 14

4.2.11 Active (work) mode ........................................................................................ 15

4.2.12 P ............................................................................................................ 15

work

4.3 Profile attributes ................................................................................................... 15

4.3.1 Profile ............................................................................................................ 15

4.3.2 Majority profile ............................................................................................... 16

4.3.3 Minority profile ............................................................................................... 16

4.3.4 Profile study .................................................................................................. 16

4.3.5 Product active power ratio ............................................................................. 16

4.3.6 PAPR ............................................................................................................ 16

4.3.7 PAWR............................................................................................................ 16

4.3.8 Product TEC error ......................................................................................... 16

4.3.9 Profile TEC error ........................................................................................... 16

4.4 Categorisation attributes ....................................................................................... 16

4.4.1 General ......................................................................................................... 16

4.4.2 Cores ............................................................................................................ 17

4.4.3 Expandability score (ES) ............................................................................... 17

4.4.4 Performance score ........................................................................................ 17

4.4.5 Graphics capability ........................................................................................ 17

---------------------- Page: 4 ----------------------
IEC 62623:2022 © IEC 2022 – 3 –

4.4.6 TEC adders ................................................................................................... 17

5 Test procedure and conditions, categorisation, TEC formula, meter specifications

and results reporting ...................................................................................................... 17

5.1 General ................................................................................................................. 17

5.2 Test setup ............................................................................................................. 17

5.3 Test procedure ...................................................................................................... 20

5.3.1 General ......................................................................................................... 20

5.3.2 Measuring off mode ....................................................................................... 20

5.3.3 Measuring sleep mode ................................................................................... 20

5.3.4 Measuring alternative low power mode .......................................................... 20

5.3.5 Measuring long idle mode .............................................................................. 21

5.3.6 Measuring short idle mode ............................................................................. 21

5.3.7 Measuring active power mode (optional, see 5.6) .......................................... 22

5.4 Test conditions ..................................................................................................... 22

5.5 Categorisation ...................................................................................................... 22

5.5.1 General ......................................................................................................... 22

5.5.2 TEC adders ................................................................................................... 23

5.6 Annualised energy consumption formulas ............................................................. 23

5.6.1 General ......................................................................................................... 23

5.6.2 Estimated annualised energy consumption formula (estimated active

workload) ....................................................................................................... 23

5.6.3 Measured annualised energy consumption formula (with an active

workload) ....................................................................................................... 24

5.6.4 Criteria for an active workload ....................................................................... 25

5.7 True RMS watt meter specification ........................................................................ 26

5.8 True RMS watt meter accuracy ............................................................................. 27

5.9 Ambient light meter specification........................................................................... 28

5.10 Reporting of results ............................................................................................... 28

Annex A (informative) Overview of profile methodology........................................................ 31

Annex B (informative) Majority profile .................................................................................. 33

Annex C (informative) Method for conducting a profile study ................................................ 34

C.1 General ................................................................................................................. 34

C.2 Profile study example ............................................................................................ 34

Annex D (informative) Sample TEC calculations .................................................................. 38

D.1 General ................................................................................................................. 38

D.2 Notebook computer example ................................................................................. 38

D.3 Desktop computer example ................................................................................... 39

Annex E (informative) Power measurement methodology ..................................................... 40

E.1 General ................................................................................................................. 40

E.2 Sampling method .................................................................................................. 40

E.3 Average reading method ....................................................................................... 41

E.4 Direct meter reading method ................................................................................. 42

Bibliography .......................................................................................................................... 44

Figure 1 – Typical test setup ................................................................................................. 19

Figure 2 – Example of estimated annualised energy consumption formula (estimated

active workload) .................................................................................................................... 24

Figure 3 – Measured annualised energy consumption formula (with an active

workload) .............................................................................................................................. 25

---------------------- Page: 5 ----------------------
– 4 – IEC 62623:2022 © IEC 2022

Figure A.1 – Example of a typical profile ............................................................................... 31

Table 1 – External display connection priority ....................................................................... 18

Table 2 – Test conditions ...................................................................................................... 22

Table 3 – Ambient light meter specifications ......................................................................... 28

Table B.1 – Duty cycle attributes for the enterprise and residential majority profile duty

cycle study ............................................................................................................................ 33

Table C.1 – Profile study 1 .................................................................................................... 35

Table C.2 – Profile study, duty cycles ................................................................................... 35

Table C.3 – Profile study, TEC and TEC calculations ................................... 36

actual estimated
---------------------- Page: 6 ----------------------
IEC 62623:2022 © IEC 2022 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
DESKTOP AND NOTEBOOK COMPUTERS –
MEASUREMENT OF ENERGY CONSUMPTION
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

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rights. IEC shall not be held responsible for identifying any or all such patent rights.

IEC 62623 has been prepared by technical area 19: Environmental and energy aspects for

multimedia systems and equipment, of IEC technical committee 100: Audio, video and

multimedia systems and equipment. It is an International Standard.

This second edition cancels and replaces the first edition published in 2012. This edition

constitutes a technical revision.
The first edition of this standard was originally based on ECMA-383.

This edition includes the following significant technical changes with respect to the previous

edition:

a) Additions to terms & definitions and modification to short & long idle descriptions.

b) Test setup modifications for notebooks where battery pack cannot be removed for testing.

c) Categorisation procedure based on ECMA-389 removed.

d) Replace majority profile with new duty cycle study including new duty cycle attributes for

desktop and notebook in a residential and enterprise application.
e) Removal of any reference and test methodology to ENERGY STAR V5.
---------------------- Page: 7 ----------------------
– 6 – IEC 62623:2022 © IEC 2022
The text of this International Standard is based on the following documents:
Draft Report on voting
100/3583/CDV 100/3669/RVC

Full information on the voting for its approval can be found in the report on voting indicated in

the above table.
The language used for the development of this International Standard is English.

This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in

accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available

at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are

described in greater detail at www.iec.ch/standardsdev/publications.
In this standard, the following print types or formats are used:
– requirements proper and normative annexes: in roman type;
– notes/explanatory matter: in smaller roman type;
– terms that are defined in 3.1: bold.

The committee has decided that the contents of this document will remain unchanged until the

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specific document. At this date, the document will be
• reconfirmed,
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• replaced by a revised edition, or
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IMPORTANT – The "colour inside" logo on the cover page of this document indicates

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of its contents. Users should therefore print this document using a colour printer.

---------------------- Page: 8 ----------------------
IEC 62623:2022 © IEC 2022 – 7 –
INTRODUCTION

This document provides definitions of energy saving modes and generic energy saving

guidance for designers of desktop and notebook computers, by defining a methodology on how

to measure the energy consumption of a product whilst providing key categorisation attributes

that enable energy consumption comparisons of similar products.

This document is originally based on ECMA-383 and complements the guidance given in

IEC 62075.
---------------------- Page: 9 ----------------------
– 8 – IEC 62623:2022 © IEC 2022
DESKTOP AND NOTEBOOK COMPUTERS –
MEASUREMENT OF ENERGY CONSUMPTION
1 Scope

This document covers personal computing products. It applies to desktop and notebook

computers as defined in 4.1 that are marketed as final products and that are hereafter referred

to as the equipment under test (EUT) or product.
This document specifies:

– a test procedure to enable the measurement of the power and/or energy consumption in

each of the EUT's power modes;

– formulas for calculating the typical energy consumption (TEC) for a given period (normally

annual);

– a majority profile to be used with this document which enables conversion of average power

into energy within the TEC formulas;
– a pre-defined format for the presentation of results.

This document does not set any pass/fail criteria for the EUTs. Users of the test results define

such criteria.
2 Normative references
There are no normative references in this document.
3 Terms, definitions and abbreviations
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1 Terms and definitions
3.1.1
active workload

simulated amount of productive or operative activity that the EUT performs as represented in

the P (see 4.2.12) and T (see 3.1.11.6) attributes of the TEC equation (see 5.6)
work work
3.1.2
category

classification within a product type that is based on product features and installed components

3.1.3
duty cycle
divisions of time the EUT spends in each of its individual power modes
Note 1 to entry: A duty cycle is expressed as a percentage totalling 1.
---------------------- Page: 10 ----------------------
IEC 62623:2022 © IEC 2022 – 9 –
3.1.4
energy use

energy used by a product when measured from the mains power supply over a given period of

time
Note 1 to entry: Energy is measured in kilowatt hour.
3.1.5
external power supply
EPS

equipment contained in a separate physical enclosure external to the computer casing and

designed to convert mains power supply to lower DC voltage(s) for the purpose of powering the

computer
Note 1 to entry: This note applies to the French language only.
Note 2 to entry: The EPS is sometimes referred to as an AC brick.

Note 3 to entry: A reference to a document which outlines the testing procedures for measuring EPS efficiencies

(External Power Supply Efficiency Test Method) can be found in the Bibliography.
3.1.6
internal power supply
IPS

component contained inside the computer casing and designed to convert AC voltage from the

mains power supply to lower DC voltage(s) for the purpose of powering the computer

components
Note 1 to entry: This note applies to the French language only.

Note 2 to entry: A reference to a document which outlines the testing procedures for measuring IPS efficiencies

(Generalized Internal Power Supply Efficiency Test Protocol) can be found in the Bibliography.

3.1.7
local area network
LAN
computer network located on a user’s premises within a limited geographical area
[SOURCE: IEC 60050-732-01-04]
Note 1 to entry: This note applies to the French language only.

Note 2 to entry: Currently the two primary technologies used in computers are IEEE 802.3 Ethernet or Wired LAN,

and IEEE 802.11 WiFi or Wireless LAN.
3.1.8
manufacturer

organization responsible for the design, development and production of a product in view of its

being placed on the market, regardless of whether these operations are carried out by that

organization itself or on its behalf
3.1.9
typical energy consumption
TEC

number for the consumption of energy of a computer that is used to compare the energy

performance of like computers, which focuses on the typical energy consumed by an EUT for a

given profile while in normal operation during a representative period of time
Note 1 to entry: This note applies to the French language only.

Note 2 to entry: For desktops and notebook computers, the key criterion of the TEC approach is a value for typical

annual energy use, measured in kilowatt-hours (kWh), using measurements of average operational mode power

levels scaled by an assumed typical duty cycle that represent annualized use for a profile.

---------------------- Page: 11 ----------------------
– 10 – IEC 62623:2022 © IEC 2022
3.1.10
actual energy consumption
TEC measured using P
work
Note 1 to entry: The actual energy consumption is referenced as TEC .
actual
3.1.11
duty cycle attributes
percentage of time the EUT spends in each of its individual power modes

Note 1 to entry: Examples of duty cycle attributes are defined in 3.1.12.1 to 3.1.12.7.

3.1.11.1
off compone
...

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