Asus P7H55D-M EVO LGA1156 microATX Motherboard

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Fan Control

To test the board's fan control, we connected the CPU fan to a manual fan speed controller so we could slow it down to induce higher CPU temperatures. A 92mm Scythe Kama 2500rpm PWM fan was connected to the CPU fan header and a 92mm Xigmatek 2800rpm PWM fan was connected to the Chassis fan header. Fan speeds and temperatures were monitored using Asus' PC Probe utility as the system was stressed.

Fan Control
Chassis Fan
Min. Fan Speed
Trigger Temp.
N/A (constant)
Max. Fan Speed Temp.
N/A (constant)
CPU fan settings: 20°C lower temperature, 50°C upper temperature, 70% maximum fan speed, 20% minimum fan speed. Chassis fan set to "Silent." Ambient temperature: 22°C

The board's automatic fan control followed the manual settings accurately though if when temperature exceeded the upper temperature by 2 degrees or more, it overrode the maximum fan speed and pumped it up to 100% for safety reasons. The Chassis fan spun at a constant speed depending on which Q-fan setting was selected. The CPU fan header can only control PWM fans but the Chassis fan header can control fans using both PWM and 3-pin fans.

Asus' Fan Xpert utility.

The Fan Xpert utility allows users to set the fan speed settings from the desktop as long as the application is running in the background. It includes a middle temperature/fan speed target point to customize fan control further.

SpeedFan Support

For Windows users, SpeedFan is our application of choice for fan control. It can be configured to raise or lower multiple fan speeds to designated limits when any specified temperature threshold is breached.

SpeedFan on the left, PC Probe on the right.

Unfortunately the current version of SpeedFan does not support the P7H55D-M EVO.

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