Intel 5400 Series manual Alternate Heatsink Sample Preparation

Page 84

Heatsink Clip Load Methodology

Alternate Heatsink Sample Preparation

As just mentioned, making sure that the load cells have minimum protrusion out of the heatsink base is paramount to meaningful results. An alternate method to make sure that the test setup will measure loads representative of the non-modified design is:

•Machine the pocket in the heatsink base to a depth such that the tips of the load cells are just flush with the heatsink base.

•Then machine back the heatsink base by around 0.25 mm [0.01”], so that the load cell tips protrude beyond the base.

Proceeding this way, the original stack height of the heatsink assembly should be preserved. This should not affect the stiffness of the heatsink significantly.

Figure C-1. Load Cell Installation in Machined Heatsink Base Pocket - Bottom View

	Heatsink Base
	Pocket	Package IHS
	Diameter ~	Package IHS
	Diameter ~	Outline (Top
	29 mm	Outline (Top
	29 mm	Surface)
	[~1.15”]	Surface)
	[~1.15”]
		Load
		Cells

84	Quad-Core Intel® Xeon® Processor 5400 Series TMDG

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Contents Quad-Core Intel Xeon Processor 5400 Series Thermal/Mechanical Design GuidelinesQuad-Core Intel Xeon Processor 5400 Series Tmdg Contents Figures Preload Test Configuration Tables Reference Revision Description Date Number Initial release of the documentQuad-Core Intel Xeon Processor 5400 Series Tmdg Objective ScopeReferences Definition of Terms Terms and Descriptions Sheet 1Term Description Terms and Descriptions Sheet 2 TDPIntroduction Mechanical Requirements Processor Mechanical ParametersProcessor Mechanical Parameters Table Parameter Minimum Maximum UnitQuad-Core Intel Xeon Processor 5400 Series Package Thermal/Mechanical Reference Design Thermal/Mechanical Reference Design Thermal/Mechanical Reference Design Quad-Core Intel Xeon Processor 5400 Series Considerations Processor Thermal Parameters and Features Thermal Control Circuit and TDPDigital Thermal Sensor Platform Environmental Control Interface Peci Multiple Core Special ConsiderationsMultiple Digital Thermal Sensor Operation Thermal Monitor for Multiple Core Products PROCHOT#, THERMTRIP#, and FORCEPR#Heatpipe Orientation for Multiple Core Processors Processor Input Processor OutputProcessor Core Geometric Center Dimensions Feature DimensionThermal Profile Equation 2-1.y = ax + bTcontrol Definition Equation 2-2.TCONTROL= -TOFFSETTcontrol and Thermal Profile Interaction Thermal Profile B Performance Targets Thermal/Mechanical Reference Design Thermal/Mechanical Reference Design Parameter Maximum Unit 2U+ CEK, Thermal Profile a1U CEK, Thermal Profile B Fan Fail Guidelines Sea-Level1U Alternative Heatsink Characterizing Cooling Solution Performance Requirements Fan Speed ControlProcessor Thermal Characterization Parameter Relationships Fan Speed Control, Tcontrol and DTS RelationshipEquation 2-3.ΨCA= Tcase TLA / TDP Condition FSC SchemeExample Equation 2-4.ΨCA= ΨCS + ΨSAChassis Thermal Design Considerations Chassis Thermal Design Capabilities and ImprovementsEquation 2-5.ΨCA= Tcase TLA / TDP = 68 45 / 85 = 0.27 C/W Equation 2-6.ΨSA= ΨCA − ΨCS = 0.27 − 0.05 = 0.22 C/WHeatsink Solutions Thermal/Mechanical Reference Design ConsiderationsHeatsink Design Considerations Thermal Interface Material SummaryAssembly Drawing Geometric EnvelopeStructural Considerations of CEK Thermal Solution Performance Characteristics 17 U+ CEK Heatsink Thermal PerformanceThermal Profile Adherence Equation 2-8.y = 0.187*X +=0.187* X +40 Equation 2-9.y = 0.246*X +1UCEKReference Solution Equation 2-10.y = 0.246*X +Components Overview Heatsink with Captive Screws and Standoffs22. Isometric View of the 2U+ CEK Heatsink CEK Heatsink Thermal Mechanical Characteristics Recommended Thermal Grease Dispense WeightThermal Interface Material TIM Processor Minimum Maximum UnitsCEK Spring 24. CEK Spring Isometric ViewThermal/Mechanical Reference Design Fan Power Supply Fan Specifications Boxed 4-wire PWM/DTS Heatsink SolutionDescription Min Typ Max Unit Steady Startup Boxed Processor Contents Systems Considerations Associated with the Active CEKThermal/Mechanical Reference Design Component Overview Figure A-1. Isometric View of the 1U Alternative HeatsinkThermal Solution Performance Characterics Thermal Profile AdherenceEquation A-1. y = 0.331*x + = Processor power value W 1U Alternative Heatsink Thermal/Mechanical Design Table B-1. Mechanical Drawing List Drawing DescriptionFigure B-1 2U CEK Heatsink Sheet 1 Figure B-2 2U CEK Heatsink Sheet 2 Figure B-3 U CEK Heatsink Sheet 3 Figure B-4 2U CEK Heatsink Sheet 4 Figure B-5. CEK Spring Sheet 1 Figure B-6. CEK Spring Sheet 2 Figure B-7. CEK Spring Sheet 3 Mechanical Drawings Mechanical Drawings Mechanical Drawings Mechanical Drawings Mechanical Drawings Mechanical Drawings Figure B-14 U CEK Heatsink Sheet 1 Figure B-15 U CEK Heatsink Sheet 2 Figure B-16 U CEK Heatsink Sheet 3 Figure B-17 U CEK Heatsink Sheet 4 Figure B-18. Active CEK Thermal Solution Volumetric Sheet 1 Figure B-19. Active CEK Thermal Solution Volumetric Sheet 2 Figure B-20. Active CEK Thermal Solution Volumetric Sheet 3 Figure B-21 U Alternative Heatsink 1 Figure B-22 U Alternative Heatsink 2 Figure B-23 U Alternative Heatsink 3 Figure B-24 U Alternative Heatsink 4 Mechanical Drawings Overview Test PreparationHeatsink Preparation Alternate Heatsink Sample Preparation Figure C-3. Preload Test Configuration Test Procedure Examples Time-Zero, Room Temperature Preload MeasurementTypical Test Equipment Table C-1. Typical Test EquipmentPreload Degradation under Bake Conditions Heatsink Clip Load Methodology Safety Requirements Safety Requirements Environmental Reliability Testing Structural Reliability TestingIntel Verification Criteria for the Reference Designs Reference Heatsink Thermal Verification2.2 Recommended Test Sequence Post-Test Pass CriteriaTable E-1 Use Conditions Environment Recommended BIOS/Processor/Memory Test Procedures Material and Recycling RequirementsQuality and Reliability Requirements Intel Enabled Suppliers Supplier InformationAdditional Suppliers For 1U2U Heatsink Alternative CEK Copper Fin Alternative CEK Copper Fin Enabled Suppliers Information 100 Quad-Core Intel Xeon Processor 5400 Series Tmdg