How to control a 3 pin fan?

lcoyke90 · Jul 10, 2017

Hello everyone,
I have a 3 pin fan on the front of my case as intake, but it's incredibly loud. It's connected to a 3 pin header as well. And, there are no settings in my motherboard to change the speed either. So, is there anyway at all to make it run quiet? Any help would be greatly appreciated, thanks!
My board:
http://www.asrock.com/mb/AMD/970M%20Pro3/?cat=Specifications
Case fans (x3)
https://www.newegg.com/Product/Product.aspx?Item=N82E16835200085

Brett_Uk · Jul 10, 2017

my front 3 pin fans are controlled by the asus softwere/bios, 3 pin fans are controlled in dc mode but you can connect a 3 pin to a 4 pin header, try connecting ur 3 oin fan to the 4 pin chassis fan header on the bored.
Most bored makers have there own sotfwere to control that sort of stuff try looking here for the softwere
http://www.asrock.com/mb/AMD/970M%20Pro3/?cat=Download&os=Win1064

BFG-9000 · Jul 10, 2017

The BIOS lets you toggle between full speed and automatic mode for each fan. You're supposed to use the Asrock Extreme Tuning Utility to adjust the RPMs in Windows.

Aeacus · Jul 10, 2017

In your MoBo manual, page 62, it's described how you can change the chassis fan speed settings in your UEFI,
link: ftp://europe.asrock.com/Manual/970M%20Pro3.pdf

Bu default, the "CPU fan 1 speed" is set to "Full On", meaning your connected fan will run 100% all the time. Just change that value to "Automatic mode", so that your fan revs up only when your system is getting hot. This helps to quiet your fan down quite a bit.

Another option is to use Asrock Extreme Tuning Utility as suggested above. Your MoBo manual also covers the fan control options in Asrock Extreme Tuning Utility. Look for page 27 and "Fan Control" chapter.

lcoyke90 · Jul 11, 2017

Aeacus :

OK, so I downloaded Asrock Extreme Tuning Utility, and have been playing around with it a bit. There's settings for "Chasis fan 1", "target CPU temperature", and target fan speed, which goes up to level 10. I got the target temp set at 55 degrees Celsius, but not sure what to set the fan at. What do you suggest?

Aeacus · Jul 11, 2017

Target fan speed is the speed fan starts to spin once your CPU reaches your target temp. 55°C isn't too hot for CPU and you can set your fan level speed 5 (50% of full power).
If you were to set the CPU target temp to 70°C or so then i'd set the fan level speed to 10 (100%).

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