Intel 2 Quad Q8400S AT80580PJ0674ML User Manual

Datasheet

99

This section describes the cooling requirements of the fan heatsink solution used by the 

boxed processor.

The boxed processor may be directly cooled with a fan heatsink. However, meeting the 

processor's temperature specification is also a function of the thermal design of the 

entire system, and ultimately the responsibility of the system integrator. The processor 

temperature specification is in 

. The boxed processor fan heatsink is able to 

keep the processor temperature within the specifications (see 

) in chassis that 

provide good thermal management. For the boxed processor fan heatsink to operate 

properly, it is critical that the airflow provided to the fan heatsink is unimpeded. Airflow 

of the fan heatsink is into the center and out of the sides of the fan heatsink. Airspace 

is required around the fan to ensure that the airflow through the fan heatsink is not 

blocked. Blocking the airflow to the fan heatsink reduces the cooling efficiency and 

decreases fan life. 

 and 

 illustrate an acceptable airspace clearance 

for the fan heatsink. The air temperature entering the fan should be kept below 38 ºC. 

Again, meeting the processor's temperature specification is the responsibility of the 

system integrator.