Can´t reduce CPU fan speed

zwiks

Distinguished
Apr 18, 2008
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18,510
Hello!

I have a cpu fan speed at 4500rpm that wont go down?

I´ve tried setting the temperature up i bios, for the fan to use max rpm´s.. no luck

Also tried SpeedFan.. no luck

My cpu temp is about 30 deg celsius @ idle

I´m confused, what to do? :)
 

steddora

Honorable
Nov 13, 2012
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11,160
Depends on the fan. I've seen plenty of fans that people put into machines and are connected straight to the 4-pin molex connector which without some type of controller it runs full bore all the time. If the bios can't control it then you may need to see if it's wired to the motherboard via a 3 or 4 pin fan connector and check if the motherboard is able to control the header that it's plugged in to.
 

steddora

Honorable
Nov 13, 2012
686
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11,160
There should be some method of slowing it down through the BIOS then. Look close at the connector and see which header it it. It will be something like CPU1 or SYS2 or the like. Then it should be as simple as finding it in the bios.