CPU Fan over 1300 RPM and won't go slower.

Moosicorn · Aug 30, 2014

I've tried to slow it down by putting it on the 'Silent' option in the BIOS but that only made it go down by 5-8 RPM. It says the temperature is at thirtyish degrees Celsius, which to my knowledge is a good temperature. None of the programs I can find on the internet to slow it down just crash my computer. It's starting to really annoy me with all the noise and the breeze it's producing. If you've come across a thread like this that could give me the answer to my problem please link it to me, thank you.

Link564 · Aug 30, 2014

Are you running quite a lot of applications? If not you may want to consider getting a new fan

jimthenagual · Aug 30, 2014

What's the cooler model name/number? If it's stock, what is the CPU?

Moosicorn · Aug 31, 2014

jimthenagual :

Intel i7-4770k @ 3.50GHz 8 cores.

jimthenagual · Aug 31, 2014

Yeah, it's spinning a little fast for idle temps. That fan is rated at 800-2500 rpm's, and you're at 1300 at low temperatures.

In your bios make sure the cpu fan is set to PWM. If you don't see that option in the bios, please post your motherboard make/model.

Moosicorn · Aug 31, 2014

System Manufacturer : Gigabyte Technology Co., Ltd.
System Model : B85M-D3H

jimthenagual · Aug 31, 2014

In your motherboard manual, page 23 it says you have a Slope PWM option in the bios. What is that set to?
http://download.gigabyte.us/FileList/Manual/mb_manual_ga-b85m-d3h_e.pdf

Is the RPM of the fan changing at all, or is it permanently at 1300?

Also, do you have the latest bios?

Moosicorn · Aug 31, 2014

The BIOS version is on F8 (not sure if its up to date), but I don't see a Slope RPM option. The RPM of the fan fluctuates quite a bit, the lowest I saw it go down to was 1298 RPM and the highest was 1459 RPM.

jimthenagual · Aug 31, 2014

If your motherboard is rev 1.x, then the latest bios is F13. Personally, I'd try updating the bios. Note, bios flashing is risky. Please read this before attempting.

http://www.gigabyte.com/webpage/20/HowToReflashBIOS.html

Moosicorn · Aug 31, 2014

I think I might just remove the fan and replace it with copper foam. I don't want to potentially break my computer seen as it was £2700.

jimthenagual · Aug 31, 2014

What is the make/model of your case? If it would fit, the hyper 212 evo is a great option for cooling, and it's very cheap.
http://uk.pcpartpicker.com/part/cooler-master-cpu-cooler-rr212e20pkr2

bmacsys · Aug 31, 2014

Link564 :

What would the amount the amount of applications he has open have to do with the rpm's of his cpu fan? The fan speed is controlled by options in his bios.

Moosicorn · Aug 31, 2014

jimthenagual :

I've already ordered the foam, and I doubt you can get effective cooling for less than £15.

bmacsys · Aug 31, 2014

Moosicorn :

Everybody that actually builds computers can handle installing an aftermarket hsf without "breaking" their computer. If they can't they are really hurting in their skillset. What the heck is copper foam anyway? They Hyper 212 EVO is a good cooling solution for your particular set up. The only drawback imho is that it doesn't use the stock backplate/retention bracket that some aftermarket coolers do making it a somewhat of pain to install.

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