Question Case fans' speed at idle

mikecs333

Honorable
Sep 4, 2013
9
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10,510
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Hi,

I recently built my first PC and I have a question regarding the case fans speed. Right now at idle they are running at 850 RPM and I would like to reduce their speed because I can hear them. I tried to change the speed curve in the BIOS but the speed stays the same at idle. Is there some setting I need to change that I'm not aware of?

I have a Fractal Nano S case with stock fans. Both fans are connected with a splitter on the chassis fan header on a Asrock z390 Phantom Gaming ITX.

Thanks for your help
 

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