Press F2 or Delete key when your PC is botting up (the keys maybe different depending on your motherboard). Press and hold Shift key and then click Restart. You can open the BIOS Dashboard in either of the two ways: In my case, the Antec Prism fans are PWM fans so I can precisely control what speed I want them to run at. The PWM fans allow for a seamless and high-precision control whereas the DC fans lack precision as their speed is controlled by varying the supplied voltage. The PWM fans are 4-pin fans whereas DC fans are 3-pins. PWM fans are DC fans but with an extra wire for PWM. With the help of a software (Dragon Center for MSI Motherboard).īefore we dive into how to control the fan speed, we should be aware of the two modes the fan operates in – PWM and DC. There are two ways you can control the fan speed (RPM) in your PC: Having said that, the process should be similar for other fans and motherboards. The CPU fan runs nice an quiet until there is some load on my CPU.In this blog post, we are going to see how to control the fan speed/RPM of Antec Prism ARGB 120mm fans on a MSI X570 Tomahawk Motherboard. So I manually entered the fan curve data into my bios and all is good now. I figured out what curve I wanted using Dragon Center, but it wouldn't save it for me. I'm not sure if it had to do with unplugging one of the fans from the fan controller or selecting "Software Control Mode" for either CPU or Fan in Dragon Center, but I was all of a sudden able to edit my CPU fan curve. 
Update: I was also unhappy with my case fan speeds, they would only run at a constant rpm, so I was playing around with some things in Dragon Center and moving the headers around between fan headers on my motherboard and using the fan controller that came with my Fractal Design Define R6 case. I'm running a B450 Carbon Gaming AC motherboard and a Rywith a Wraith Prism cooler.
I have smart fan selected in the motherboard bios and I also tried adjusting the fan speeds in bios, but nothing changed there either with the new numbers I put in.ĭoes anyone know how to adjust my CPU fan speeds? I can click on PUMP Fan and SYS Fan to see the options for adjusting both of those fan speeds, but literally nothing happens when I try clicking on CPU Fan. I went into MSI Dragon Center to adjust the fan curve, but nothing happens when I click on CPU Fan in the custom user scenario. My fan is running at approximately 1550 rpm when my system is at idle and it sounds too loud.
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