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Why does my cpu fan run at 1800 rpm with no system load?

I just built my new gaming pc today. Everything is fine, but I cannot stand the loud cpu fan. I bought a cooler master 212 evo. It's TOO LOUD. I went in the BIOS to take a look at some stuff and it told me the fan runs at 1795-1820 rpm. Is something wrong here? Do I need to do some BIOS configuration? I tried setting a few things, but it still runs at 1800 rpm. Is this normal? I am thinking to replace this fan with some sunbeam rubber silent fan. Thanks.

December 29, 2011

4 Comments • Newest first

athos28

There is no option for me to control this fan with like it varying. It is either "full on" or "automatic mode." In automatic mode it tells me which level speed I want, I put 1 for it to be quiet. Idk if it goes higher or something, what's going on?

I connected all chassis fans to the mobo. I got ALL CHASSIS fans to be quiet. I just need a quiet cpu fan that is on PWN nicely. the cpu fan is on lvl 1 speed, so it is at 1300 rpm. Idk, this setting for the cpu fan is weird. Maybe if I update the bios, there's more options.

I might return this mobo. I don't like the settings for the cpu fan, it isn't very nice.

It says "NVIDIA" "Standard VGA Graphics Adapter." Ya looks like I just need some drivers.

The fan is even sorta loud for me on 1300 rpm. I think it's best if I just change it out with some nice noctua fan or something like it.

Reply December 29, 2011 - edited
skye09

Start > Run > "dxdiag" > Display Tab > Come back and post what it says after name. Thats assuming youve checked "display adapters" in Device Manager.

Reply December 29, 2011 - edited
athos28

Can it be the motherboard? I did drop a few screws on it during the build. I took out the motherboard 3 times because, the first time, the stand off configuration on the chassis, did not match the mobo, so I took it out. The second time, I forgot to put the I/O plate. The third time, I thought I could use the motherboard cut-out to install the heatsink, but part of the holes were covered, where the cut-out was not large enough, so I took out the motherboard, installed the heatsink and put it back in.

I did plug it into the 4-pin cpu fan plug in the mobo.

The temp is actually a bit high on idle. I get 35 on 3.3 Ghz and I overclocked the cpu to 4.0 Ghz, and the temp at idle is 42-43. And yes, the rpm of the fan was 1800 before I overclocked the cpu. The rpm of the fan stayed at 1795-1820 in both situations.

I did move around the heatsink after I installed it because it was turned a bit to the right, so I wiggled it a bit to make it straighter. Could it be the thermal paste was not applied well? I used a little white stick thing, where i evenly distributed the paste along the cpu. The thermal paste the heatsink came with, did not look of much great quality, but thermal paste is all the same crap. I can use my own silver thermal paste I had already, Should I re-apply paste using my own.

Tomorrow, I will call cooler master, and see what they say.

Thanks for a quick reply.

Edit: I did some research. I could have damaged the sensors on the motherboard that tell the cpu what speed to run. It also might be because I need to update the BIOS and do some fan BIOS configuration.

Edit2: I just went through the BIOS again. I see the fan speed actually has level 1-9. It was on Level 9. I put it on 5 to see any difference. and it now runs at 1600 rpm. This is weird. How do I make it run by itself, without this level stuff? It says "full something" for "quiet control function." I use it and it makes my fan go to 1900 rpm. I go back to the other setting and put the level 1 speed and the rpm went down to 1300. A 200mm case fan runs loud. I connected ALL case fans to the psu. If I connect them to the mobo, they run quieter right?

Also why isn't my graphics card recognized. I am using a monitor DVI connection to the graphics card, I can use it fine, it's just I don't see my graphics card recognized in device manager. Will it show up after some driver updates?

Reply December 29, 2011 - edited
djpinc19

Something is definitely wrong, but you need to determine the cause before anything else.
If either heatsink is defective or the thermal compound was not applied correctly, then a different fan will not solve the problem.

Reply December 29, 2011 - edited