Intel E1400 - Celeron 2.0GHz 800MHz 512KB Socket 775 Dual-Core CPU Design Manual page 4

4.2.10
4.2.11
5 Balanced Technology Extended (BTX) Thermal/Mechanical Design Information ........ 41
5.1 Overview of the Balanced Technology Extended (BTX) Reference Design ...... 41
5.1.1
5.1.2
5.1.3
5.1.4
5.1.5
5.1.6
5.2 Environmental Reliability Testing ............................................................46
5.2.1
5.2.2
5.2.3
5.3 Material and Recycling Requirements ......................................................49
5.4 Safety Requirements ............................................................................50
5.5 Geometric Envelope for Intel Reference BTX Thermal Module Assembly ........ 50
5.6 Preload and TMA Stiffness .....................................................................51
5.6.1
5.6.2
6 ATX Thermal/Mechanical Design Information.......................................................55
6.1 ATX Reference Design Requirements .......................................................55
6.2 Validation Results for Reference Design ...................................................58
6.2.1
6.2.2
6.2.3
6.2.4
6.3 Environmental Reliability Testing ............................................................61
6.3.1
6.3.2
6.3.3
6.4 Material and Recycling Requirements ......................................................63
6.5 Safety Requirements ............................................................................64
6.6 Geometric Envelope for Intel Reference ATX Thermal Mechanical Design ...... 64
6.7 Reference Attach Mechanism..................................................................65
6.7.1
6.7.2
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7 Intel Quiet System Technology (Intel
7.1 Intel
7.1.1
7.1.2
7.2 Board and System Implementation of Intel
7.3 Intel
7.4 Fan Hub Thermistor and Intel
Appendix A LGA775 Socket Heatsink Loading ......................................................................75
A.1 LGA775 Socket Heatsink Considerations ..................................................75
A.2 Metric for Heatsink Preload for ATX/uATX Designs Non-Compliant with
Intel
4
Digital Thermal Sensor.............................................................38
Platform Environmental Control Interface (PECI)..........................39
Target Heatsink Performance ....................................................41
Acoustics ...............................................................................42
Effective Fan Curve ................................................................. 44
Voltage Regulator Thermal Management .....................................45
Altitude..................................................................................46
Reference Heatsink Thermal Validation .......................................46
Structural Reliability Testing ..................................................... 46
Power Cycling .........................................................................49
Recommended BIOS/CPU/Memory Test Procedures ......................49
Structural Design Strategy........................................................51
TMA Preload versus Stiffness ....................................................51
Heatsink Performance ..............................................................58
Acoustics ...............................................................................59
Altitude..................................................................................60
Heatsink Thermal Validation .....................................................60
Structural Reliability Testing ..................................................... 61
Power Cycling .........................................................................63
Recommended BIOS/CPU/Memory Test Procedures ......................63
Structural Design Strategy........................................................65
Mechanical Interface to the Reference Attach Mechanism ..............66
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QST Algorithm ............................................................................69
Output Weighting Matrix ..........................................................70
Proportional-Integral-Derivative (PID) ........................................ 70
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QST Configuration and Tuning.......................................................74
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Reference Design ........................................................................75
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QST) .....................................................69
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QST ......................................72
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QST ........................................................74
Thermal and Mechanical Design Guidelines