ASUS® P6X58D-E Chassis QFan

[abdulhamid]

Not sure if this question has been asked previously. I set up Qfan under CHASSIS FAN in bios which seems to set the fan speeds to 60% (tested using SpeedFan) regardless of whether I choose Standard, Silent or Turbo. I then ran Prime95 for a few minutes to check if the fan speeds increase as the temps go up. I checked PC Probe II and SpeedFan but the speeds do not seem to increase. Any ideas why this might be? Is this a known bug with the Asus boards?

If I plug a fan into the CPU FAN it seems to be able to regulate the fan speeds accordingly.

 

[pengipete]

The speed changes with temperature so if your CPU stayed below the temperature at which the Q-fan profile starts to increase the speed, it won't change. I believe the temperature at which the fans turn up to full speed for that board is 70C - what temperatures were you getting when running Prime95? What speeds do you get from those fans with Q-fan enable and disabled - actual numbers rather than percentages?

There are a few of thing to note. Firstly, Speedfan does not work correctly with every motherboard without being configured. Secondly, you can have problems with fan speeds - setting and reporting them - if you use multiple applications so it's possible that having Speedfan running - even if correctly configured - is interfering with Q-fan. Lastly, do the fan actually turn faster - look at them and listen to them. It may simply be that Speedfan is wrong - I know that Speedfan is not able to set individual speeds for fans on that board so it may be averaging out the spin-sppeds.

 

[abdulhamid]

The CPU temp is 63C and core Temp on 2 of the cores are 70 and 71 with Prime95.

With Q-fan disabled I get readings of between 1300rpm and 1400rpm and enabled they are around 900 rpm.

I cannot hear the fans speed up with q-fan enabled but when they are disabled there is a slight noticeable increase in noise.