CPU Fan Connection on P8P67

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27 Nov 2010
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I have the P8P67 motherboard and a Thermalright Silver Arrow cooler. I have one of the coolers fans plugged into CPU_FAN and the other into CHA_FAN1.

When I turn my PC on, I always get the screen saying that my CPU fan is running too slow, then have to press F1 to go into the BIOS, where I see that fan plugged into CPU_FAN is running at around 570rpm and is coloured red for being slow. And the other fan that is plugged into CHA_FAN1 runs at around 700rpm.

Have I got them plugged into the correct slots?

I'm presuming that the CHA_FAN1 fan is just stuck at 700 the no matter what as it's meant to be a chassis fan, whereas the CPU_FAN one alters its speed depending on temperature as it's the proper slot for a CPU cooler fan? Which is the reason it runs slow when I start up the PC as it's all cool, but then speeds up when needed as the temperature rises?

So is it just my motherboard not having 2 available CPU fan slots that's my issue and nothing I can do about it?

Any help much appreciated, thanks.
 
The chassis fan speed profiles are set higher compared to the CPU fan profiles:

CPU fan
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Chassis fan
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If you want both fans to have the same profile either use a PWM fan splitter cable or use the ASUS Fan Xpert utility to set a custom profile for the chassis fan.

Also you can go into the BIOS and disable the slow fan speed warning or set it to something lower, like 400RPM:

Lna8dpMl.png.jpg
 
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