The CPU Q-Fan Mode and CPU Fan Profile items appear when you enable the CPU Q-Fan Control feature.

CPU Q-Fan Mode [PWM]

Allows you to select the type of CPU fan cable connected to the CPU fan connector. Set to [PWM] when using a 4-pin CPU fan cable. Configuration options: [PWM]

Some CPU fans with a 4-pin cable do not comply with Intel®’s PWM fan specification. When using this type of CPU fan, you can not reduce the CPU fan speed even if you set the CPU Q-Fan Mode to [PWM].

CPU Fan Profile [Optimal]

Allows you to set the appropriate performance level of the CPU Q-Fan. When set to [Optimal], the CPU fan automatically adjusts depending on the CPU temperature. Set this item to [Silent Mode] to minimize fan speed for quiet CPU fan operation, or [Performance Mode] to achieve maximum CPU fan speed.

Chassis Fan 1/2 Speed [xxxxRPM] or [Ignored] / [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 motherboard, the field shows [N/A].

Chassis Q-Fan Control [Disabled]

Allows you to enable or disable the chassis Q-Fan controller.

Configuration options: [Disabled] [Enabled]

• The Chassis Fan Ratio and Chassis Target Temperature items appear when you enable the Chassis Q-Fan Control feature.

•The Chassis Q-Fan function is available only on CHA_FAN1.

Chassis Fan Ratio [Auto]

Allows you to select the fan speed ratio so that the fans operate at a low CPU temperature. Setting a very low ratio may cause a dramatical fan speed drop and trigger a hardware monitor warning message.

Configuration options: [Optimal] [90%] [80%] [70%] [60%]

Chassis Target Temperature [37ºC]

The CPU fan speed will be adjusted to maintain the CPU temperature as low as the selected temperature.

Configuration options: [28ºC] [31ºC] [34ºC] [37ºC] [40ºC] [43ºC] [46ºC]

ASUS P5K64 WS

4-29