Asus Rampage II Extreme - Manual (Page 120)

3-38 Chapter 3: BIOS setup
PWRFan Duty [50%]
Allows you to set the fan duty cycle. This item appears when the POWER FAN
Control item is set to [Duty Mode].
Configuration options: [40%] [50%] [60%] [70%] [80%] [90%]
OPTFan1/2/3 Control [Disabled]
Allows you to select the optional fan control mode. When this item is set to
[Duty Mode], you can configure the OPTFan1/2/3 Duty item. If you set this
item to [User Mode], you are allowed to configure the OPTFan1/2/3 Low
Speed Temp and OPTFan1/2/3 Full Speed Temp item. Configuration options:
[Disabled] [Duty Mode] [User Mode]
You need to connect the thermal sensor cables to the OPT_TEMP1/2/3
connectors to enable this function.
OPTFan1/2/3 Duty [50%]
Allows you to set the fan duty cycle. This item appears when the OPTFan1/2/3
Control item is set to [Duty Mode].
Configuration options: [40%] [50%] [60%] [70%] [80%] [90%]
OPTFan1/2/3 Low Speed Temp [25˚C]
Allows you to set the temperature at which the power fan rotates at low speed.
This item appears when the OPTFan1/2/3 Control item is set to [User Mode].
Configuration options: [25˚C] [30˚C] [35˚C] [40˚C]
OPTFan1/2/3 Full Speed Temp [60˚C]
Allows you to set the temperature at which the power fan rotates at full speed.
This item appears when the OPTFan1/2/3 Control item is set to [User Mode].
Configuration options: [60˚C] [70˚C] [80˚C] [90˚C]