Asus Q-fan 2 control: what the hell does it do?


Nov 24, 2006
Trying out the Q-fan feature of my Asus P5GD2, but it seemingly has absolutely no effect on fan speed. Yes, I've enabled it in BIOS and connected a Noctua fan to the CPU_FAN connector.

Running a stress test where the CPU temp goes up like 20 deg. C and the motherboard about 10, yet the fan stays at the same speed. (You can slow it in BIOS using a lower ratio, but it never actually increases as temp goes up).

Anyone actually get this to work?