Intel III Xeon 800 MHz 80526KZ800256 User Manual

 

89 

processor does not ship with an auxiliary fan, it is highly recommended that a power header be provided.  It is 
also recommended that the power header be consistent with the power header for other boxed processors 
that feature a fan-sense capable fan heatsink.  Figure 40 shows the typical boxed processor fan/heatsink 
power cable connector.  Table 54 shows the typical boxed processor fan power cable connector requirements.  
The actual requirements for the auxiliary fan power may vary.  Consult your fan manufacturer and/or fan 
documentation for specifications. 

 

Pin

Signal

Straight square pin, 3-pin terminal housing with
polarizing ribs and friction locking ramp.

0.100" pin pitch, 0.025" square pin width.

Waldom*/Molex* P/N 22-01-3037 or equivalent.

Match with straight pin, friction lock header on motherboard
Waldom/Molex P/N 22-23-2031, AMP* P/N 640456-3,
or equivalent.

1

2

3

GND

+12V

SENSE

1

2

3

 

000888 

+12V:  12 volt fan power supply 

7V 

12V 

13.8V 

IC:  Fan current draw 

 

100mA 

 

SENSE:  SENSE frequency (baseboard should pull 

this pin up to appropriate V

CC

 with resistor (typically 

10 to 12 k

Ω

) 

 

2 pulses per 

fan revolution 

 

 

Given the complex and unique nature of baseboard layouts, and the special chassis required to support them, 
thermal performance may vary greatly with each baseboard/chassis combination.  Baseboard manufacturers 
must evaluate and recommend effective thermal solutions for their specific designs, particularly designs that 
are proprietary.  Such thermal solutions must take all system components into account.  The power 
requirements of all processors that will be supported by the baseboard should be accommodated. The boxed 
Pentium® III Xeon™ processor at 700 MHz and 900 MHz is designed to provide a flexible cooling solution by 
incorporating features by which an auxiliary fan may be attached.