Intel Xeon Processor with 800 MHz System Bus Thermal/Mechanical Design Guide

Intel® Xeon™ Processor with 800 MHz System Bus Thermal/Mechanical Design Guidelines 37
Thermal/Mechanical Reference Design
2.5.1.1 2U+ Active CEK Heatsink (2U+ and above pedestal)
This heatsink was designed to help pedestal chassis users meet the thermal processor requirements
without the use of chassis ducting. It may
be necessary to implement some form of chassis air
guide or air duct to meet the T
LA
temperature of 40 °C depending on the pedestal chassis layout.
Also, while the active heatsink solution is designed to mechanically fit into a 2U chassis, it may
require additional space at the top of the heatsink to allow sufficient airflow into the heatsink fan.
Therefore, additional design criteria may need to be considered if this heatsink is used in a 2U rack
mount chassis, or in a chassis that has drive bay obstructions above the inlet to the fan heatsink.
Thermal Profile A should be used to help determine the thermal performance of the platform.
Once again It is recommended that the ambient air temperature outside of the chassis be kept at or
below 35
°C. The air passing directly over the processor heatsink should not be preheated by other
system components. Meeting the processor’s temperature specification is the responsibility of the
system integrator.
2.6 Boxed Processor Contents
A direct chassis attach method must be used to avoid problems related to shock and vibration, due
to the weight of the heatsink required to cool the processor. The board must not bend beyond
specification in order to avoid damage. The boxed processor contains the components necessary to
solve both issues. The boxed processor will include the following items:
• Intel Xeon Processor with 800 MHz System Bus
• Unattached (Active or Passive) Heatsink
• 4 screws, 4 springs, and 4 heatsink standoffs (all captive to the heatsink)
• Thermal Interface Material (pre-applied on heatsink)
• Installation Manual
• Intel Inside Logo
Table 2-21. Fan Cable Connector Supplier & Part Number
Vendor 3-Pin Connector Part Number 4-Pin Connector Part Number
AMP
Fan Connector: 643815-3
Header: 640456-3
N/A
Walden
Molex
Fan Connector: 22-01-3037
Header: 22-23-2031
Fan Connector: 47054-1000
Header: 47053-1000
Wieson N/A
Fan Connector: 2510C888-001
Header: 2366C888-007
Foxconn N/A
Fan Connector: N/A
Header: HF27040-M1