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AMD 1207 manual Fans, Thermal Interface Material, Chapter, Thermal Design of Custom 2U-4P Systems

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5.3.5Fans

32800 Rev. 3.02 August 2006

Thermal Design Guide for Socket F (1207) Processors

on flow simulations of an AMD reference 2U system, the flow-through of the heat sink is approximately 18 CFM. Figure 11 shows that this flow rate corresponds to a case-to-ambient thermal resistance of 0.22°C/W. This case-to-ambient thermal resistance exceeds requirements (see Table 7 on page 30).

Figure 11. Thermal Performance Chart of Heat Sink When Used with a Dual-Core Processor in 90 nm Process

5.3.5Fans

AMD has conducted simulations of the heat sink described in Section 5.3.4 on page 33 with two 60

mmx 60 mm x 38 mm fans (Delta Part number FFB0812EHE-HS2) in series, that is, back to back. The fans have a maximum flow rate of 80.2 CFM and a maximum pressure drop of 0.8 inches of water. The heat sinks are ducted so the flow from the two fans enters the processor heat sinks with some bypass. The bypass is designed to cool the core VRM.

5.3.6Thermal Interface Material

The heat sink makes contact with the top surface of the processor package utilizing the thermal interface material between the processor lid and the heat sink. AMD recommends using a high performance grease such as Shin-Etsu 7783D or Dow Corning TC-5022. AMD does not recommend using phase change materials between the heat sink and the processor. Phase-change materials develop high adhesion forces between the heat sink and processor when the material is in the solid phase. This strong adhesive force may cause the processor to stick to the heat sink, making heat sink removal difficult and damaging the socket solder balls.

Chapter 5

Thermal Design of Custom 2U-4P Systems

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AMD 1207 manual Fans, Thermal Interface Material, Chapter, Thermal Design of Custom 2U-4P Systems

Contents

Publication # Issue DateThermal Design Guide for Socket F 1207 Processors Advanced Micro DevicesTrademarks 2005 Advanced Micro Devices, Inc. All rights reservedChapter 4 Thermal Design of Custom 1U-2P Systems ContentsChapter 2 Processor Thermal Solutions ContentsAppendix C Keep-Out Drawings for Custom 2U-4P Systems Based on the Socket F 1207 ProcessorsAppendix B Keep-Out Drawings for Custom 1U-2P Systems Based on the Socket F 1207 ProcessorList of Figures List of FiguresFigure 26. Socket F 1207 2U-4P Socket Outline and Socket Window . . . . . . . . . . . . . . . . . . . . .56 Figure 27. Socket F 1207 2U-4P Heat Sink Height Restriction Zone. . . . . . . . . . . . . . . . . . . . . .57 Figure 28. Socket F 1207 2U-4P Board No-Through-Hole Keep-Out . . . . . . . . . . . . . . . . . . . . .58 Figure 29. Socket F 1207 2U-4P Backplate Contact Zone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59 Figure 30. Floor-Plan of AMD Reference Custom 2U-4P System . . . . . . . . . . . . . . . . . . . . . . . . .61 Figure 31. Streamline Plot of AMD Reference Custom 2U-4P System List of Tables List of Tables32800 Rev. 3.02 August Thermal Design Guide for Socket F 1207 ProcessorsList of Tables Revision Revision HistoryRevision History Date32800 Rev. 3.02 August Thermal Design Guide for Socket F 1207 ProcessorsRevision History Introduction Chapter 1 Introduction1.1 Summary of Requirements ChapterChapter IntroductionThermal Design Guide for Socket F 1207 Processors Processor Thermal Solutions Chapter 2 Processor Thermal Solutions2.1 Processor Specifications Mechanical and Thermal Specifications for Socket F 1207 ProcessorsProcessor Thermal Solutions 2.2 Socket DescriptionFigure 1. The 1207-Pin Socket Box PIB Thermal Solution Chapter 3 Thermal Design of Platforms Usingthe AMD Processor-In-a-Box PIB Thermal Solution Thermal Design of Platforms Using the AMD Processor-In-aThermal Design of Platforms Using the AMD Processor-In-a 3.2 Thermal Solution Design Requirements3.3 Sample Heat Sinks and Attachment Methods Material Thermal Design of Platforms Using the AMD Processor-In-aChapter Part DescriptionThermal Design of Platforms Using the AMD Processor-In-a 3.3.1 Backplate AssemblyChapter 3.3.2 Retention FrameThermal Design of Platforms Using the AMD Processor-In-a Chapter Thermal Design of Platforms Using the AMD Processor-In-aBox PIB Thermal Solution Thermal Design Guide for Socket F 1207 ProcessorsChapter Chapter 4 Thermal Design of Custom 1U-2P Systems4.1 Motherboard Component Height Restrictions Thermal Design of Custom 1U-2P SystemsThermal Design of Custom 1U-2P Systems 4.2 Thermal Solution Design RequirementsThermal Solution Design Requirements for Custom 1U-2P Systems 4.3 Sample Heat Sinks and Attachment MethodsQuantity SystemsChapter Thermal Design of Custom 1U-2P SystemsThermal Design of Custom 1U-2P Systems 4.3.1 Backplate AssemblyFigure 5. Exploded View of Thermal Solution for Custom 1U-2P Systems 4.3.2 Spring ScrewsChapter 4.3.3 Heat SinkFigure 6. High Performance Heat Sink for Custom 1U-2P Systems Fin ParametersThermal Design of Custom 1U-2P Systems 4.3.4 FansThermal Design of Custom 1U-2P Systems 4.3.5 Thermal Interface MaterialChapter Chapter Thermal Design of Custom 1U-2P SystemsThermal Design Guide for Socket F 1207 Processors Chapter Chapter 5 Thermal Design of Custom 2U-4P Systems5.1 Motherboard Component Height Restrictions Thermal Design of Custom 2U-4P SystemsThermal Design of Custom 2U-4P Systems 5.2 Thermal Solution Design RequirementsThermal Solution Design Requirements for Custom 2U-4P Systems 5.3 Sample Heat Sinks and Attachment MethodsQuantity SystemsChapter Thermal Design of Custom 2U-4P SystemsChapter 5.3.1 Backplate AssemblyThermal Design of Custom 2U-4P Systems Thermal Design Guide for Socket F 1207 ProcessorsChemical Element of SK7 Spring Steel 5.3.2 Spring Clip5.3.3 Retention Frame 5.3.4 Heat SinkLength Figure 10. High Performance Heat Sink for Custom 2U-4P SystemsFin Parameters Thermal Design of Custom 2U-4P SystemsThermal Design of Custom 2U-4P Systems 5.3.5 Fans5.3.6 Thermal Interface Material ChapterChapter Thermal Design of Custom 2U-4P SystemsThermal Design Guide for Socket F 1207 Processors Keep-Out Drawings for Platforms Using the PIB Thermal Solution for Socket F 1207 ProcessorsAppendix A A D V A N C E D M I C R O D E V I C E S Figure 12. Socket F 1207 PIB Board Component Height RestrictionsAppendix A Thermal Design Guide for Socket F 1207 Processors0.787 Socket F 1207 PIB Mounting Holes, Contact Pads, and No-Routing ZoneAppendix A Thermal Design Guide for Socket F 1207 ProcessorsThermal Design Socket F 1207 PIB Socket Outline and Socket WindowAppendix A Guide for Socket F 1207 ProcessorsAppendix A F 1207 PIBHeat Sink Height ZoneThermal Design Guide for Socket F 1207 Processors Keep-OutAppendix A F 1207 PIBThermal Design Guide Figure 17. Socket F 1207 PIB Board Bottom Side Keep-OutThermal Appendix AAppendix A Solution for Socket F 1207 ProcessorsKeep-Out Drawings for Platforms Using the PIB Thermal Thermal Design Guide for Socket F 1207 ProcessorsKeep-Out Drawings for Custom 1U-2P Systems Based on the Appendix BSocket F 1207 Processor Appendix B Drawings for2P Systems Processor Height RestrictionsNo-Routing Zone BasedHoles, Contact Pads, and on theWindow F 1207 ProcessorFigure 20. Socket F 1207 1U-2P Socket Outline and Socket Based on theAppendix B Figure 21. Socket F 1207 1U-2P Heat Sink1U-2P Systems 1207 Processor Height Restriction ZoneDrawings for Keep-OutFigure 22. Socket F 1207 1U 2P Board No-Through-Hole KeepF 1207 Processor F 1207 1UAppendix B Drawings forAppendix B Socket F 1207 ProcessorThermal Design Guide for Socket F 1207 Processors Keep-Out Drawings for Custom 1U-2P Systems Based on theKeep-Out Drawings for Custom 2U-4P Systems Based on the Appendix CSocket F 1207 Processor Appendix C Figure 24. Socket F 1207 2U-4P Board Component Height RestrictionsDrawings for F 1207 ProcessorF 1207 Processor 4P Mounting Holes, Contact Pads, and No-Routing ZoneAppendix C Keep-OutDrawings for Custom 2U-4PF 1207 2U-4P Socket Outline and Socket WindowDrawings for Figure 27. Socket F 1207 2U-4P Heat Sink2U-4P Systems 1207 Processor Appendix CAppendix C Figure 28. Socket F 1207 2U-4P Board No-Through-Hole Keep-OutDrawings for F 1207 ProcessorF 1207 Processor 1207Appendix C Drawings forAppendix C Socket F 1207 ProcessorThermal Design Guide for Socket F 1207 Processors Keep-Out Drawings for Custom 2U-4P Systems Based on theSocket F 1207 Processors Figure 30. Floor-Plan of AMD Reference Custom 2U-4P SystemAppendix D Socket F 1207 Processors Figure 31. Streamline Plot of AMD Reference Custom 2U-4P System