XFX 650I - Manual (Page 75)

Configuring the BIOS
61
Dynamic Fan Control
Press Enter to display the Dynamic Fan Control menu.
Use this menu to control the speed of the various fans on the motherboard. Set
CPU fan speed to
[SmartFan] when you want the speed of the fans
automatically controlled based on temperature. To set the fan speed to a
constant rate, select
[Manual] and then enter the speed from 0% to 100%.
Set the desired speed for the Aux, nForce, and Chassis fans from 0% to 100%.
The system defaults to 100%.
CPU Fan Speed Control [ SmartFan ]
If temp > 70ºC, Set Fan Speed 100%
If temp < 30ºC, Set Fan Speed 0%
x Manual Fan Speed, % 100
AUX Fan Speed Control, % [ 100 ]
nForce Fan Speed Control, % [ 100 ]
Chassis Fan Speed Control, % [ 100 ]