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Rampage IV Gene fan control problem

Stryker7314
Level 7
I'm attempting to control a non pwm fan (Gentle Typhoon AP-15) with the cpu_fan header and it just runs at full bore, completely ignoring both the silent bios settings and FAN Xpert. Am I missing something?

I got it to work for the Chassis Fan headers, though they are all controlled by only one setting... kinda lame.
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Sihastru wrote:
You need to switch the control scheme to ADVANCED for that fan header in order to switch it to DC mode. All other settings, including AUTO, only work in PWM mode.


There is no advanced setting in the bios/Monitor/Fan speed control. What i can see in my mobo (rampage gene iv) is Cpu Q-fan control and Chassis 1 Q-Fan control. The option is to enable or disable it. There is no other option in the bios related to the fans as far as I can see.
Asus Rampage Gene IV - 3960x 4.2 Ghz - EVGA GTX 680 4GB FTW - Quadro 4000- 16GB 4x4 corsair Vengeance 1600mhz - SSD Samsung pro 256gb - 3TB barracuda - 1000w Silverstone Strider - H100i cooling on a Black Aerocool Dead Silence case. Windows 8.1 pro

There are three settings.

Fan Control, Enabled/Disabled, self explanatory
Fan Speed Low Limit, X00 RPM, under this threshold the fan error alarm is triggered
Fan Profile <- this is the setting that will switch between DC and PWM mode, some of the headers will have more profiles available, some will have less
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Sihastru wrote:
There are three settings.

Fan Control, Enabled/Disabled, self explanatory
Fan Speed Low Limit, X00 RPM, under this threshold the fan error alarm is triggered
Fan Profile <- this is the setting that will switch between DC and PWM mode, some of the headers will have more profiles available, some will have less


It's pretty bad that the CPU fan header is limited to PWM and no DC seeing how it's the most important...