The 38 mm Processor Wind Tunnel (PWT) fan used
on boxed Intel® Xeon® processors at or above 3 GHz
has a much higher fan current draw (1.5 A vs 340
mA) than the 25 mm fan used on previous boxed
Intel® Xeon® processors. Some boards may not be
able to provide this current.
The 38 mm fan requires a maximum current draw of
1.5 A to provide the high performance necessary to
meet the demanding thermal requirements of
processors running at 3 GHz and above.
A fan cable adapter has been provided with boxed
processors at 3 GHz or above that can be used to
draw power directly from the power supply.
Refer to Figure 1 and use the following
installation procedure.
- Attach connector A from the power supply to connector B on the fan cable adapter.
- Now attach connector C from the fan cable adapter to the fan cable connector.
- Attach connector D to the CPU fan header on the server board so that the board can monitor the fan operation.
- Connector E is a pass-through in case it is needed to power other peripheral devices. It does not have to be connected. Make sure to use it with devices that are in close proximity to the processor, so that the cables will reach.
