Техническая Спецификация для Intel X3360 AT80569KJ073N

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Datasheet

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

CPU 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 see the Yorkfield Processor Thermal and Mechanical Design Guidelines 

Addendum.

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