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Intel Q9450 Design Guidelines - Page 45

Validation Results for Reference Design

UPC - 735858198493

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Intel® Thermal/Mechanical Reference Design Information The D60188-001 reference design takes advantage of the cost saving for the light fan/heatsink mass (450g) and the new TIM material (Dow Corning TC-1996 grease). A bottom view of the copper core applied by this grease is provided in Figure 12. Figure 12. Bottom View of Copper Core Applied by TC-1996 Grease The ATX motherboard keep-out and the height recommendations defined in Section 5.6 remain the same for a thermal solution for the processor in the 775-Land LGA package. Note: If this fan design is used in your product and you will deliver it to end use customers, you have the responsibility to determine an adequate level of protection (e.g., protection barriers, a cage, or an interlock) against contact with the energized fan by the user during user servicing. 5.2 Validation Results for Reference Design 5.2.1 Heatsink Performance Table 3 provides the RCFH-4 heatsink performance for the 775_VR_CONFIG 05B processors. Table 4 provides the D60188-001 heatsink performance for the Intel® Core™2 Quad processor Q6000 series at 95 W and Intel® Core™2 Quad processor Q9000 and Q8000 series at 95 W. The results are based on the test procedure described in Section 5.2.4. The tables includes a TA assumption of 39 °C and 40 °C for the Intel reference thermal solution at the processor fan heatsink inlet discussed in Section 2.4.1. Table 3. ATX Reference Heatsink Performance (RCFH-4) for 775_VR_CONFIG 05B Processors Processor Target Thermal Performance, ca (Mean + 3) Assum TAption Intel® Core™2 Extreme quad-core processor QX6000 series at the 775_VR_CONFIG_05B and Intel® Core™2 Extreme processor QX9000 series 0.20 C/W TA = 39 C NOTES: 1. Performance targets (Ψ ca) as measured with a live processor at TDP. Notes 1 Thermal and Mechanical Design Guidelines 45

Section	Page
1 Introduction	11
1.1 Document Goals and Scope	11
1.1.1 Importance of Thermal Management	11
1.1.2 Document Goals	11
1.1.3 Document Scope	12
1.2 References	13
1.3 Definition of Terms	14
2 Processor Thermal/Mechanical Information	17
2.1 Mechanical Requirements	17
2.1.1 Processor Package	17
2.1.2 Heatsink Attach	19
2.1.2.1 General Guidelines	19
2.1.2.2 Heatsink Clip Load Requirement	19
2.1.2.3 Additional Guidelines	20
2.2 Thermal Requirements	20
2.2.1 Processor Case Temperature	20
2.2.2 Thermal Profile	21
2.2.3 TCONTROL	23
2.3 Heatsink Design Considerations	24
2.3.1 Heatsink Size	25
2.3.2 Heatsink Mass	25
2.3.3 Package IHS Flatness	26
2.3.4 Thermal Interface Material	26
2.4 System Thermal Solution Considerations	27
2.4.1 Chassis Thermal Design Capabilities	27
2.4.2 Improving Chassis Thermal Performance	27
2.4.3 Summary	28
2.5 System Integration Considerations	28
3 Thermal Metrology	29
3.1 Characterizing Cooling Performance Requirements	29
3.1.1 Example	31
3.2 Processor Thermal Solution Performance Assessment	31
3.3 Local Ambient Temperature Measurement Guidelines	32
3.4 Processor Case Temperature Measurement Guidelines	34
4 Thermal Management Logic and Thermal Monitor Feature	35
4.1 Processor Power Dissipation	35
4.2 Thermal Monitor Implementation	35
4.2.1 PROCHOT# Signal	36
4.2.2 Thermal Control Circuit	36
4.2.2.1 Thermal Monitor	36
4.2.2.2 Thermal Monitor 2 (TM2)	37
4.2.3 Operation and Configuration	38
4.2.4 On-Demand Mode	39
4.2.5 System Considerations	39
4.2.6 Operating System and Application Software Considerations	40
4.2.7 THERMTRIP# Signal	40
4.2.8 Cooling System Failure Warning	40
4.2.9 Digital Thermal Sensor	41
4.2.10 Platform Environmental Control Interface (PECI)	42
5 Intel® Thermal/Mechanical Reference Design Information	43
5.1 ATX Reference Design Requirements	43
5.2 Validation Results for Reference Design	45
5.2.1 Heatsink Performance	45
5.2.2 Acoustics	46
5.2.3 Altitude	47
5.2.4 Reference Heatsink Thermal Validation	47
5.2.5 Fan Performance for Active Heatsink Thermal Solution	48
5.3 Environmental Reliability Testing	49
5.3.1 Structural Reliability Testing	49
5.3.1.1 Random Vibration Test Procedure	49
5.3.1.2 Shock Test Procedure	49
5.3.2 Power Cycling	51
5.3.3 Recommended BIOS/Processor/Memory Test Procedures	51
5.4 Material and Recycling Requirements	51
5.5 Safety Requirements	52
5.6 Geometric Envelope for Intel® Reference ATX Thermal Mechanical Design	52
5.7 Reference Attach Mechanism	53
5.7.1 Structural Design Strategy	53
5.7.2 Mechanical Interface to the Reference Attach Mechanism	54
6 Intel® Quiet System Technology (Intel® QST)	57
6.1 Intel® Quiet System Technology Algorithm	57
6.1.1 Output Weighting Matrix	58
6.1.2 Proportional-Integral-Derivative (PID)	58
6.2 Board and System Implementation of Intel® Quiet System Technology	60
6.3 Intel® QST Configuration and Tuning	62