Intel E5400 AT80571PG0682ML Data Sheet

Datasheet

93

The boxed processor fan heatsink will not weigh more than 450 grams. See 

and the appropriate Thermal and Mechanical Design Guidelines (see 

) for 

details on the processor weight and heatsink requirements.

The boxed processor thermal solution requires a heatsink attach clip assembly, to 

secure the processor and fan heatsink in the baseboard socket. The boxed processor 

will ship with the heatsink attach clip assembly. 

The boxed processor's fan heatsink requires a +12 V power supply. A fan power cable 

will be shipped with the boxed processor to draw power from a power header on the 

baseboard. The power cable connector and pinout are shown in 

. Baseboards 

must provide a matched power header to support the boxed processor. 

 

contains specifications for the input and output signals at the fan heatsink connector. 

The fan heatsink outputs a SENSE signal, which is an open- collector output that pulses 

at a rate of 2 pulses per fan revolution. A baseboard pull-up resistor provides V

OH

 to 

match the system board-mounted fan speed monitor requirements, if applicable. Use of 

the SENSE signal is optional. If the SENSE signal is not used, pin 3 of the connector 

should be tied to GND.

The fan heatsink receives a PWM signal from the motherboard from the 4th pin of the 

connector labeled as CONTROL.