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How to set CPU fan RPM speed

Last response: in CPUs
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June 15, 2014 11:31:40 PM

I have a Noctua NH-U12S and I can't change it's RPM speed. I've tried SpeedFan and the BIOS but nothing works.

More about : set cpu fan rpm speed

a c 92 à CPUs
June 15, 2014 11:40:55 PM

it is set by the motherboard cpu fan connector .
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a b à CPUs
June 15, 2014 11:43:28 PM

Connect it to the correct connector then set it through BIOS.
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June 16, 2014 12:51:21 AM

I connected it to the same connector it was with the stock cooler (CPUFAN, 4 pin) and the BIOS thing didn't change it.
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a c 92 à CPUs
June 16, 2014 6:57:51 PM

this fan came with a power reducer so the speed would be from 1500 rpm to 1200 rpm .
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June 17, 2014 12:09:34 AM

I didn't use that cable and the RPM is more in the 1000 RPM range.
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June 17, 2014 1:22:10 PM

Yeah I know that with the LNA cable it will max at 1200 RPM but I'm not using it. I tried to raise the PWM percentage on the fan in the BIOS but it didn't change its speed, it did work on the stock fan I had before.
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a c 92 à CPUs
June 17, 2014 7:30:45 PM

the only thing i see is to give a look at your motherboard user manual or bios option there could be something there or a bios uptade that was made to solve this the last one is to contact the board maker about this .
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June 18, 2014 8:42:23 AM

Well I found the solution. It was set to "Temperature" in PWM mode in SpeedFan so I changed it to manual and now I can control its speed.
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a c 92 à CPUs
June 18, 2014 7:43:51 PM

just be carefull not to lower to much the fan speed to prevent overheat on the cpu .
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June 19, 2014 12:54:29 AM

I actually raised it to 1200 RPM.
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a c 92 à CPUs
June 19, 2014 12:57:52 PM

in the speed fan configuration you could set temp to 35 c min and 50 c before it alert you then fan all log same for voltage speed log and check all min value 0 max 100 and auto also on the manin page where you see the readings put fan speed on auto ,then let see what it look like .
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