Intel QX6700 HH80562PH0678M User Manual

96

Datasheet

If the new 4-pin active fan heat sink solution is connected to an older 3-pin baseboard 

processor fan header it will default back to a thermistor controlled mode, allowing 

compatibility with existing 3-pin baseboard designs. Under thermistor controlled mode, 

the fan RPM is automatically varied based on the Tinlet temperature measured by a 

thermistor located at the fan inlet.

For more details on specific motherboard requirements for 4-wire based fan speed 

control refer to the appropriate Thermal and Mechanical Design Guidelines (see