Asus P5RD2-VM - Manual (Page 77)

ASUS P5RD2-VM 2-31
Chassis Fan Speed [xxxxRPM] or [N/A]
The onboard hardware monitor automatically detects and displays the
chassis fan speed in rotations per minute (RPM). If the fan is not connected
to the chassis, the specific field shows N/A.
Configuration options: [Ignored] [xxxRPM] or [N/A]
CPU Voltage Selection
The onboard hardware monitor automatically detects the CPU voltage
through the onboard voltage regulators.
VCORE Voltage, 3.3V Voltage, 5V Voltage, 12V Voltage
The onboard hardware monitor automatically detects the voltage output
through the onboard voltage regulators.
Q-Fan Control [Disabled]
Allows you to enable or disable the ASUS Q-Fan feature that smartly
adjusts the fan speeds for more efficient system operation.
Configuration options: [Disabled] [Enabled]