Intel X3370 INXEON3370 Data Sheet

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Datasheet

If the boxed processor fan heatsink 4-pin connector is connected to a 3-pin 

motherboard header it will operate as follows:

 The boxed processor fan will operate at different speeds over a short range of internal 

chassis temperatures. This allows the processor fan to operate at a lower speed and 

noise level, while internal chassis temperatures are low. If internal chassis temperature 

increases beyond a lower set point, the fan speed will rise linearly with the internal 

temperature until the higher set point is reached. At that point, the fan speed is at its 

maximum. As fan speed increases, so does fan noise levels. Systems should be 

designed to provide adequate air around the boxed processor fan heatsink that remains 

cooler then lower set point. These set points, represented in 

, 

can vary by a few degrees from fan heatsink to fan heatsink. The internal chassis 

temperature should be kept below 38 ºC. Meeting the processor's temperature 

specification (see 

) is the responsibility of the system integrator.

The motherboard must supply a constant +12V to the processor's power header to 

ensure proper operation of the variable speed fan for the boxed processor. Refer to 

 for the specific requirements.