Contents

1

Introduction

..............................................................................................................

9

 

1.1

Objective

9

 

1.2

Scope

9

 

1.3

References

9

 

1.4

Definition of Terms

10

2

Thermal/Mechanical Reference Design

13

 

2.1

Mechanical Requirements

13

 

 

2.1.1

Processor Mechanical Parameters

13

 

 

2.1.2

Quad-Core Intel® Xeon® Processor 5400 Series Package

14

 

 

2.1.3

Quad-Core Intel® Xeon® Processor 5400 Series Considerations

18

 

2.2 Processor Thermal Parameters and Features

19

 

 

2.2.1

Thermal Control Circuit and TDP

19

 

 

2.2.2

Digital Thermal Sensor

20

 

 

2.2.3

Platform Environmental Control Interface (PECI)

21

 

 

2.2.4

Multiple Core Special Considerations

21

 

 

2.2.5

Thermal Profile

24

 

 

2.2.6

TCONTROL Definition

25

 

 

2.2.7

Thermal Profile Concepts for the Quad-Core Intel® Xeon®

 

 

 

 

Processor 5400 Series

26

 

 

2.2.8

Performance Targets

28

 

2.3

Fan Fail Guidelines

32

 

2.4 Characterizing Cooling Solution Performance Requirements

33

 

 

2.4.1

Fan Speed Control

33

 

 

2.4.2

Processor Thermal Characterization Parameter Relationships

34

 

 

2.4.3

Chassis Thermal Design Considerations

36

 

2.5 Thermal/Mechanical Reference Design Considerations

37

 

 

2.5.1

Heatsink Solutions

37

 

 

2.5.2

Thermal Interface Material

38

 

 

2.5.3

Summary

38

 

 

2.5.4

Assembly Overview of the Intel Reference Thermal Mechanical Design

39

 

 

2.5.5

Thermal Solution Performance Characteristics

41

 

 

2.5.6

Thermal Profile Adherence

42

 

 

2.5.7

Components Overview

45

 

 

2.5.8

Boxed Active Thermal Solution for the Quad-Core Intel®

 

 

 

 

Xeon® Processor 5400 Series Thermal Profile

49

A

1U Alternative Heatsink Thermal/Mechanical Design

53

 

A.1

Component Overview

53

 

A.2 Thermal Solution Performance Characterics

54

 

A.3

Thermal Profile Adherence

54

B

Mechanical Drawings

57

C

Heatsink Clip Load Methodology

83

 

C.1

Overview

83

 

C.2

Test Preparation

83

 

 

C.2.1

Heatsink Preparation

83

 

 

C.2.2

Typical Test Equipment

86

 

 

C.2.3

Test Procedure Examples

86

 

 

C.2.4

Time-Zero, Room Temperature Preload Measurement

86

 

 

C.2.5

Preload Degradation under Bake Conditions

87

Quad-Core Intel® Xeon® Processor 5400 Series TMDG

3

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Intel 5400 Series manual Contents