[SOLVED] CPU fan speed not change with curve in bios

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wuupman

Reputable
Apr 21, 2016
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Hi there, I have a msi z370 tomahawk motherboard. When trying to change the fan curve for the cpu cooler, it doesn't do anything in bios. But when i change them with msi command center, it changes. I have a cryorig h7
 
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Also, (being I do not have that motherboard) I know some the fan curve settings sometimes are based on PWM fans and sometimes another solution.. there is at least in some of the PCs I have built an switch to tell it how to control the fans.. AND sometimes like the current motherboard I have.. you can click an button in the UEFI / BIOS to test the fan speeds so it goes through the full spectrum of the fan speed and sets limits like high and low rpm so it does not think it can spin slower then the fan can actually spin.. I find that a nice feature. ALSO the second main thing (other then software you may have installed in windows like LuckyMatt42 stated) is make sure you set the fan speed to the correct temp sensor IF you have that option...
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Doctor Rob

Distinguished
Jul 21, 2008
676
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19,160
Also, (being I do not have that motherboard) I know some the fan curve settings sometimes are based on PWM fans and sometimes another solution.. there is at least in some of the PCs I have built an switch to tell it how to control the fans.. AND sometimes like the current motherboard I have.. you can click an button in the UEFI / BIOS to test the fan speeds so it goes through the full spectrum of the fan speed and sets limits like high and low rpm so it does not think it can spin slower then the fan can actually spin.. I find that a nice feature. ALSO the second main thing (other then software you may have installed in windows like LuckyMatt42 stated) is make sure you set the fan speed to the correct temp sensor IF you have that option like I do as well...

For me the fan speeds are controlled by my water temps and NOT the CPU temps.. so my corsair software I have in windows keeps things in check for temps based on water temps.. no reason to go full speed fans when the water is still cool.. that is for the CPU temps.. I have other fans as well that can be set in bios (not the program I use from corsair.. but I can set the computer to shutdown if any of the fans die if I want to)
 
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pat12345

Reputable
Dec 3, 2014
2
0
4,510
On my MSI gaming carbo pro x470 mobo the temps in the bios fan curve are offset by 20 degrees C... so what ever you want your temps vs fan speed to be to be just lower the temps by 20. I guess there is a problem with how windows and MSI mobos communicate CPU temps to each other. I haven't tried this yet with the temperate of other components.
 
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