Intel ATX 3.0 User Manual

8 336521
Revision History
Document
Number
Revision
Number
Description
Revision
Date
336521
0.5 • Initial release of combined power supply design guide
• Combined CFX12V, LFX12V, ATX12V, SFX12V, and
TFX12V content into one desktop power supply design
guide
• CFX12V content derived from revision 1.2
 Updated 12V1 current for 300 W configuration
 Updated efficiency loading for 300 W configuration
• LFX12V content derived from revision 1.1
• ATX12V content derived from revision 2.2
• SFX12V content derived from revision 3.1
• TFX12V content derived from revision 2.1
 Updated 12V1 current for 300 W configuration
 Updated efficiency loading for 300 W configuration
• Updated Capacitive Load section to use standard capacitor
values
• Updated 5 VSB efficiency recommendations for Digital
Office platforms
• Removed power-down warning from power supply timing
diagram
• Marked sections with labels to indicate REQUIRED,
RECOMMENDED, or OPTIONAL items
January
2006
1.0 • Added 12V2 Current for Processor Configurations table
• Added revision numbers to form factor specific chapters
June 2006
1.1 • Removed outdated ENERGY STAR* requirements and
added some new ENERGY STAR information.
• Updated Typical Power Distribution tables for all power
supply form factors and updated minimum loads.
• Updated cross regulation figures.
• Added Flex ATX power supply form factor.
• Updated capacitive loading table.
• Clarified over voltage and over current verbiage.
• Added Power-up Cross Loading Condition section.
• Other changes shown in red with change bars.
March 2007
1.2 • Section 4.3.1 and Added max of 400 mV Ripple/Noise to
PS_ON and PWR_OK signals
• Section 14.2 Figure 49 replaced to implement change in
dimension C
• Section 4.3 Added Power-down timing to Figure 4-3 and
Table 4-9: Power Supply TimingTable 4-9 (T6 > 1 ms)
• Section 8.3
Clarified Class D requirements. Added
additional references for EMC requirements by country
• Section 4.5.9 Added Climate Savers Computing text
• Updated all Cross-regulation graphs
February
2008

Intel ATX 3.0 Specifications

General

Brand	Intel
Model	ATX 3.0
Category	Computer Hardware
Language	English