Intel X3480 BV80605002505AH Data Sheet

98

The boxed processor's fanheat sink requires a constant +12 V supplied to pin 2 and 
does not support variable voltage control or 3-pin PWM control. 

The power header on the baseboard must be positioned to allow the fan heatsink power 
cable to reach it. The power header identification and location should be documented in 
the platform documentation, or on the system board itself. 

 shows the 

location of the fan power connector relative to the processor socket. The baseboard 
power header should be positioned within 110 mm [4.33 inches] from the center of the 
processor socket.

+12 V: 12 volt fan power supply

11.4

12

12.6

V

-

IC: 

Peak fan steady-state current draw
Average fan steady-state current draw
Max fan start-up current draw 
Fan start-up current draw maximum duration

—
—
—
—

3.0
2.0
3.0
1.0

—
—
—
—

A
A
A
Second

-

SENSE: SENSE frequency

—

2

—

pulses per fan 

revolution

1

Notes:
1. Baseboard should pull this pin up to 5 V with a resistor.

CONTROL

21

25

28

Hz

2, 3

2. Open drain type, pulse width modulated.

3. The fan will have a pull-up resistor for this signal, maximum of 5.25 V.

C

Pin

Signal

1 2 3 4

1

2

3

4

GND

+12 V

SENSE
CONTROL

Straight square pin, 4-pin terminal housing with
polarizing ribs and friction locking ramp.

0.100" pitch, 0.025" square pin width.

Match with straight pin, friction lock header on
mainboard.