Asus M4A89TD PRO/USB3 - Manual (Page 86)

3-30 Chapter 3: BIOS setup
Chapter 3
CPU Q-Fan Mode [Optimal]
[Turbo] Sets to [Turbo] to achieve maximum CPU fan speed.
[Standard] Sets to [Standard] to make the CPU fan automatically adjust depending on
the CPU temperature.
[Silent] Sets to [Silent] to minimize the fan speed for quiet CPU fan operation.]
[Manual] Sets to [Manual] to assign detailed fan speed control parameters.
The following four items appear only when you set CPU Q-Fan Mode to [Manual].
CPU Upper Temperature [70˚C/158˚F]
Sets the upper limit of the CPU temperature.
Configuration options: [30˚C/86˚F] [40˚C/104˚F] [50˚C/122˚F] [60˚C/140˚F]
[70˚C/158˚F] [80˚C/176˚F] [90˚C/194˚F]
CPU Fan Max. Duty Cycle [100%]
Sets the maximum CPU fan duty cycle. When the CPU temperature reaches the upper
limit, the CPU fan will operate at the maximum duty cycle.
Configuration options: [20%] [30%] [40%] [50%] [60%] [70%] [80%] [90%] [100%]
CPU Lower Temperature [20˚C/68˚F]
Displays the lower limit of the CPU temperature.
CPU Fan Min. Duty Cycle [20%]
Sets the minimum CPU fan duty cycle. When the CPU temperature is under 20˚C/68˚F,
the CPU fan will operate at the minimum duty cycle.
Configuration options: [00%] [10%] [20%] [30%] [40%] [50%] [60%] [70%] [80%] [90%]
[100%]
Chassis Q-Fan Mode [Disabled]
[Disabled] Disables the Chassis Q-Fan control feature.
[Enabled] Enables the Chassis Q-Fan control feature.
The following item appears only when you set Chassis Q-Fan Mode to [Enabled].
Chassis Fan Speed Low Limit [200 RPM]
A warning message will appear to remind you that the chassis fan speed is lower than the
selected value.
Configuration options: [500RPM] [400RPM] [300RPM] [200RPM] [100RPM] [Ignored]
Chassis Q-Fan Mode [Silent]
[Turbo] Sets to [Turbo] to achieve maximum chassis fan speed.
[Standard] Sets to [Standard] to make the chassis fan automatically adjust depending
on the chassis temperature.
[Silent] Sets to [Silent] to minimize fan speed for quiet chassis fan operation.
[Manual] Sets to [Manual] to assign detailed fan speed control parameters.