Q-fan?

[scrawnypaleguy]

I'm hooking up my new A8N32-SLI deluxe and I want Q-fan to control the cpu and rear case fans, which the manual says it can do. When I plug in the rear fan to the chassis fan port and the cpu fan to the cpu fan port and run it without Q-fan, both fans run fine at full speed (albeit kinda loud). But when I turn on Q-fan, the cpu fan won't spin up but the chassis fan will.

I thought that maybe my cpu fan (a 1200 rpm 120mm scythe fan) was too weak to begin with and the low voltage supplied to it just wasn't enough to get it started since my chassis fan (a 1500 rpm 120mm Arctic Silver AF12 fan) was working fine, so I switched the two plugs and plugged the chassis fan into the cpu fan and vice versa. However when I did that, the chassis fan didn't spin up but the cpu fan did! What is the problem here?

 

[thrawn86]

http://www.asus.com/999/html/events/mb/qfan.htm

With the Q-Fan cooling system, users can now work in a distraction-free environment with minimal system noise. This unique technology, which intelligently and automatically adjusts CPU fan speeds according to system load and temperature, is available only on motherboards by ASUS, the world's top designer and manufacturer of motherboards.

It shouldn't be adjusting your chassis fan speed at all.

 

[scrawnypaleguy]

That's the original Q-fan, this new one has Q-fan 2.

"ASUS Q-Fan2 technology intelligently adjusts both CPU fan and chassis fan speeds according to system loading to ensure quiet, cool and efficient operation."

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