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Intel ATX User Manual
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Processor Co
nfigurations
Design Guide
13
2.2.2
Overclockin
g Re
commendations
The power levels listed in
Section
2.1
are for processors that follo
w the Plan Of Record
(POR) power levels
that in
clude Turbo Mode
.
If the processor is overclocked then
power levels will
be
incre
ased.
If the power supply is expected to support end users
who desire to overclock then the 12V power rail to the processor should be
higher than
what is listed in
Table 2
-1
.
§ §
12
14
Table of Contents
Default Chapter
3
Table of Contents
3
1 Introduction
8
Alternative Low Power Mode for Power Supplies
8
References
8
Terminology
9
Table 1-1: Conventions and Terminology
9
Table 1-2: Support Terminology
10
2 Processor Configurations
11
Processor Configurations - Recommended
11
Table 2-1: 12V2 Current for Processor Configurations
11
High End Desktop Market Processor Considerations
12
Modular Power Supply Connectors
12
Overclocking Recommendations
13
3 Electrical
14
AC Input - Required
14
Input over Current Protection - Required
14
Inrush Current - Required
14
Input under Voltage - Required
14
Table 3-1: AC Input Line Requirements
14
DC Output - Required
15
DC Voltage Regulation - Required
15
DC Output Current - Required
15
Table 3-2: DC Output Voltage Regulation
15
Table 3-3: DC Output Transient Step Sizes
15
Remote Sensing - Recommended
16
Other Low Power System Requirements - Recommended
16
Table 3-4: Recommended System DC and AC Power Consumption
16
Output Ripple Noise - Required
17
Figure 3-1: Differential Noise Test Setup
17
Table 3-5: DC Output Noise/Ripple
17
Capacitive Load - Recommended
18
Closed Loop Stability - Required
18
+5V DC / +3.3V DC Power Sequencing - Required
18
Table 3-6: Output Capacitive Loads
18
Voltage Hold-Up Time - Required
19
12V2 DC Minimum Loading - Required
19
Figure 3-2: Power Supply Timing
19
Table 3-7: 12V2 DC Minimum Current
19
Timing, Housekeeping, and Control - Required
20
Figure 3-3: Power on Timing
20
Table 3-8: Power Supply Timing
20
Power-Up Cross Loading Condition - Required
21
PWR_OK - Required
21
Table 3-9: PWR_OK Signal Characteristics
21
PS_ON# - Required
22
Table 3-10: PS_ON# Signal Characteristics
22
5VSB - Required
23
Figure 3-4: PS_ON# Signal Characteristics
23
Figure 3-5: +5VSB Power on Timing Versus VAC
24
Power-On Time - Required
24
Rise Time - Required
24
Overshoot at Turn-On/Turn-Off - Required
25
Reset after Shutdown
25
5VSB at Power-Down - Required
25
Figure 3-6: Rise Time Characteristics
25
5VSB Fall Time - Recommendation
26
Output Protection
26
Over Voltage Protection (OVP) - Required
26
Figure 3-7: 5VSB Fall Time
26
Table 3-11: over Voltage Protection
26
Short Circuit Protection (SCP) - Required
27
Load Situation - Required
27
Over Current Protection (OCP) - Required
27
Over Temperature Protection (OTP) - Required
27
Output Bypass - Required
27
Separate Current Limit for 12V2 - Recommended
27
Overall Power Supply Efficiency Levels
28
Power Supply Efficiency for Energy Regulations - Energy Star* and CEC PC Computers with High Expandability Score - Recommended
28
Table 3-12: Efficiency Versus Load Minimum Requirements
28
Table 3-13: Low Load Efficiency Requirements Increase over Time
28
Table 3-14: Efficiency Versus Load for Energy Star
29
Table 3-15: Efficiency Versus Load for CEC PC Computers with High Expandability
29
4 Mechanical
30
Labeling and Marking - Recommended
30
Connectors - Required
30
AC Connector
30
DC Connectors
30
Figure 4-1: Connectors (Pin-Side View, Not to Scale)
31
Table 4-1: Main Power Connector Pin-Out
32
Table 4-2: Peripheral Connector Pin-Out
32
Table 4-3: Floppy Connector Pin-Out
33
Table 4-4: Pcie* Graphics Card 6 Pin Connector Pin-Out
33
Table 4-5: PCI-E Graphics Card 8 Pin (6+2) Connector Pin-Out
33
Table 4-6: +12 V Power 4 Pin Connector Pin-Out
34
Table 4-7: +12 V Power 8 Pin Connector Pin-Out
34
Airflow and Fans - Recommended
35
Fan Location and Direction
35
Figure 4-2: Serial ATA* Power Connector
35
Table 4-8: Serial ATA* Power Connector Pin-Out
35
Fan Size and Speed
36
Venting
36
5 Acoustics
37
Acoustics - Recommended
37
Table 5-1: Recommended Power Supply Acoustic Targets
37
6 Environmental
38
Temperature - Recommended
38
Thermal Shock (Shipping) - Recommended
38
Humidity - Recommended
38
Altitude - Recommended
38
Mechanical Shock - Recommended
39
Random Vibration - Recommended
39
7 Electromagnetic Compatibility
40
Emissions - Required
40
Immunity - Required
40
Input Line Current Harmonic Content - Optional
40
Table 7-1: EMC Requirement by Country
40
Magnetic Leakage Field - Required
41
Voltage Fluctuations and Flicker - Required
41
8 Safety
42
North America - Required
42
International - Required
43
Proscribed Materials - Required
43
Catastrophic Failure Protection - Recommended
43
9 Reliability
44
Reliability - Recommended
44
Reliability - PS_ON# Toggle for S0Ix Mode - Required
44
10 CFX12V Specific Guidelines 1.63
45
Physical Dimensions - Required
45
Figure 10-1: CFX12V Mechanical Outline
45
11 LFX12V Specific Guidelines 1.43
46
Physical Dimensions - Required
46
Figure 11-1: LFX 12V Mechanical Outline
46
Figure 11-2: Mechanical Details
47
Figure 11-3: PSU Slot Feature Detail
47
Figure 11-4: Recommended Chassis Tab Feature
48
12 ATX12V Specific Guidelines 2.53
49
Figure 12-1: Power Supply Dimensions for Chassis Not Requiring Top Venting
49
Figure 12-2: Power Supply Dimensions for Chassis Requiring Top Venting
50
13 SFX12V Specific Guidelines 3.43
51
Lower Profile Package - Physical Dimensions - Required
51
Fan Requirements - Required
51
Figure 13-1: 40 MM Profile Mechanical Outline
52
Figure 13-2: Chassis Cutout
52
Top Fan Mount Package - Physical Dimensions -Required
53
Fan Requirements - Required
53
Figure 13-3: Top Mount Fan Profile Mechanical Outline
53
Reduced Depth Top Mount Fan - Physical
54
Fan Requirements - Required
54
Figure 13-4: Chassis Cutout
54
Figure 13-5: Recessed Fan Mounting
54
Standard SFX Profile Package - Physical Dimensions - Required
55
Figure 13-6: Reduced Depth Top Mount Fan Profile Mechanical Outline
55
Figure 13-7: Chassis Cutout
55
Fan Requirements - Required
56
Figure 13-8: 60 MM Mechanical Outline
56
PS3 Form Factor- Physical Dimensions - Required
57
Fan Requirements - Required
57
Figure 13-9: Chassis Cutout
57
Figure 13-10: PS3 Mechanical Outline
58
14 TFX12V Specific Guidelines 2.53
59
Physical Dimensions - Required
59
Figure 14-1: Mechanical Outline
59
Figure 14-2: Dimensions and Recommended Feature Placements (Not to Scale)
60
Mounting Options - Recommended
61
Figure 14-3: Power Supply Mounting Slot Detail
61
Chassis Requirements - Recommended
62
Figure 14-4: Fan Right and Fan Left Orientations of Power Supply in a Chassis
62
Figure 14-5: Suggested TFX12V Chassis Cutout
62
Figure 14-6: Suggested Mounting Tab (Chassis Feature)
63
15 Flex ATX Specific Guidelines 1.23
64
Physical Dimensions - Required
64
Figure 15-1: Mechanical Outline
64
Figure 15-2: Dimensions and Recommended Feature Placements (Not to Scale)
65
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Intel ATX Specifications
General
Brand
Intel
Model
ATX
Category
Power Supply
Language
English
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