I'm having problems with the 4-pin fan headers on my new GA-P35-DS4 Rev 2 motherboard running BIOS F8. I'm using "Smart Fan Control" for the CPU fan header, set to "Auto", and it does not start my heat sink fan (4-pin, ZeroTherm BTF90). The fan does start when the temperature approaches 50C, but I'd like it to run at low speed at all times. That's the way it worked on my old motherboard, an Intel D975XBX BadAxe. In addition, the other PWM header, SYS FAN 2, does not supply the full 12 V to a 3-pin fan attached to it. I had to stop using this header, because my Nexus fan attached to it wouldn't start. There appears to be no way to control the behavior of SYS FAN 2, so in effect, it's a useless header.
I've tried EasyTune 5, and it is inadequate for a number of reasons:
I've tried EasyTune 5, and it is inadequate for a number of reasons:
- The fan adjustments it makes don't appear to stick between reboots, and since it causes a UAC prompt under Vista, running it automatically is not an option. (At least when I reboot, my CPU fan stops, and it doesn't restart until I run EasyTune again.)
- Making those adjustments is tedious, as the up/down arrows don't auto-repeat.
- The adjustment range is out of whack. To get my fan to start up, I have to set the minimum to 95%.
- It can only control the CPU fan.
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