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Intel E2160 Design Guide - Page 37

Geometric Envelope for Intel Reference PICMG 1.3 Thermal Mechanical Design, Appendix D

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Intel® Reference Thermal Solution-Intel® CoreTM 2 Duo E6400, E4300, and Intel® Pentium® Dual-Core E2160 Processor 5.5 and higher surface temperatures. The system designer needs to account for altitude effects in the overall system thermal design to make sure that the TC requirement for the processor is met at the targeted altitude. Geometric Envelope for Intel Reference PICMG 1.3 Thermal Mechanical Design Figure 20 and Figure 21 in Appendix D give detailed reference PICMG 1.3 motherboard keep-out information for the reference thermal/mechanical enabling design. These drawings include height restrictions in the enabling component region. October 2007 Order Number: 315279 - 003US Intel® CoreTM 2 Duo E6400, E4300, and Intel® Pentium® Dual-Core E2160 Processor TDG 37

Section	Page
Intel® CoreTM 2 Duo E6400, E4300, and Intel® Pentium® Dual-Core E2160 Processor: Thermal Design Guide	1
Contents	3
Figures	5
Tables	5
Revision History	6
1.0 Introduction	7
1.1 Document Goals and Scope	7
1.1.1 Importance of Thermal Management	7
1.1.2 Document Goals	7
1.1.3 Document Scope	7
1.2 References	9
1.3 Definition of Terms	9
2.0 Processor Thermal/Mechanical Information	11
2.1 Mechanical Requirements	11
2.1.1 Processor Package	11
2.1.2 Heatsink Attach	12
2.2 Thermal Requirements	14
2.2.1 Processor Case Temperature	14
2.2.2 Thermal Profile	15
2.2.3 Tcontrol	16
2.3 Heatsink Design Considerations	17
2.3.1 Heatsink Size	17
2.3.2 Heatsink Mass	18
2.3.3 Package IHS Flatness	18
2.3.4 Thermal Interface Material	18
2.4 System Thermal Solution Considerations	19
2.4.1 Chassis Thermal Design Capabilities	19
2.4.2 Improving Chassis Thermal Performance	19
2.4.3 Summary	19
2.5 System Integration Considerations	20
3.0 Thermal Metrology	21
3.1 Characterizing Cooling Performance Requirements	21
3.1.1 Example	22
3.2 Processor Thermal Solution Performance Assessment	23
3.3 Local Ambient Temperature Measurement Guidelines	23
3.4 Processor Case Temperature Measurement Guidelines	25
4.0 Thermal Management Logic and Thermal Monitor Feature	26
4.1 Processor Power Dissipation	26
4.2 Thermal Monitor Implementation	26
4.2.1 PROCHOT# Signal	27
4.2.2 Thermal Control Circuit	27
4.2.3 Thermal Monitor 2	28
4.2.4 Operation and Configuration	29
4.2.5 On-Demand Mode	30
4.2.6 System Considerations	30
4.2.7 Operating System and Application Software Considerations	31
4.2.8 THERMTRIP# Signal	31
4.2.9 Cooling System Failure Warning	31
4.2.10 Digital Thermal Sensor	31
4.2.11 Platform Environmental Control Interface (PECI)	32
5.0 Intel® Reference Thermal Solution	33
5.1 Thermal Solution Requirements	33
5.2 PICMG 1.3 Form Factor	34
5.3 ATX/BTX form factors	36
5.4 Altitude	36
5.5 Geometric Envelope for Intel Reference PICMG 1.3 Thermal Mechanical Design	37
6.0 Intel® Quiet System Technology (Intel® QST)	38
6.1 Intel® QST Algorithm	38
6.1.1 Output Weighting Matrix	39
6.1.2 Proportional-Integral-Derivative (PID)	39
6.2 Board and System Implementation of Intel® QST	41
6.3 Intel® QST Configuration and Tuning	43
6.4 Fan Hub Thermistor and Intel® QST	43
Appendix A LGA775 Socket Heatsink Loading	44
A.1 LGA775 Socket Heatsink Considerations	44
A.2 Metric for Heatsink Preload for Designs Non-Compliant with Intel Reference Design	44
A.2.1 Heatsink Preload Requirement Limitations	44
A.2.2 Motherboard Deflection Metric Definition	45
A.2.3 Board Deflection Limits	46
A.2.4 Board Deflection Metric Implementation Example	47
A.2.5 Additional Considerations	48
A.3 Heatsink Selection Guidelines	49
Appendix B Thermal Interface Management	50
B.1 Bond Line Management	50
B.2 Interface Material Area	50
B.3 Interface Material Performance	50
Appendix C Case Temperature Reference Metrology	51
C.1 Objective and Scope	51
Appendix D Mechanical Drawings	52