Intel ATX 3.0, Design Manual

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Introduction
336521 15
Document
Document Number
/Source
ENERGY STAR for Computers Version 8.0 https://www.energystar
.gov/products/spec/co
mputers_version_8_0_
pd
European Union Energy Related Products(ErP) Lot 6 https://ec.europa.eu/en
ergy/en/topics/energy-
efficiency/energy-
efficient-
products/standby
Power Supply Efficiency Labeling Program – 80 plus Organization 80plus.org
Generalized Test Protocol for Calculating the Energy Efficiency of
Internal Ac-Dc and Dc-Dc Power Supplies Revision 6.7.1
EPRI – Listed at
80plus.org website
Efficiency (ETA) and Noise (LAMBDA) programs: Cybenetics LTD Cybenetics.com
1.3 Terminology
Table 1-1 defines the acronyms, conventions, and terminology that is used throughout
the design guide.
Table 1-1: Conventions and Terminology
Acronym, Convention/
Terminology
Description
ALPM Alternative Low Power Mode, ALPM replaces the traditional
Sleep Mode (ACPI S3) with a new sleep mode. An example of
ALPM is with Microsoft* Windows Modern Standby* or Lucid
Sleep with Google* Chrome*.
AWG American Wire Gauge
BA Declared sound power, LwAd. The declared sound power level
shall be measured according to ISO* 7779 for the power
supply and reported according to ISO 9296.
CFM Cubic Feet per Minute (airflow).
Monotonically A waveform changes from one level to another in a steady
fashion, without oscillation.
MTBF Mean time between failure.
Noise The periodic or random signals over frequency band of 0 Hz
to 20 MHz.
Non-ALPM Computers that do not use Alternative Low Power Mode use
traditional Sleep Mode (ACPI S3).
Overcurrent A condition in which the current demand on a supply output
exceeds its rated output current. This commonly occurs if
there is a "short circuit" condition in the load attached to the
supply.