Hur styr man en PWM fläkt upp eller ner i varvtal?

I5-750 @ 4,0Ghz | corsair 850w | Corsair 1600mhz Dominator 8GB | samsung 1TB HDD | Crucial m4 SSD 64GB | P7P55 PRO | XFX HD 6970 | Fractal Design R2 Silver window mod | Corsair H50 watercooler
"CPU: AMD Phenom X2 [Överklockad till tre känslor]"
R2:Extended Silence Fenix

11600K@5.1 GHz + 32GB Corsair Vengeance RGB PRO 3200@3400 MHz + MSI RTX 2080 Super Gaming X Trio +
WDC Blue SN550 1TB + Black OEM SN730 500GB + Kingston A1000 480GB + A2000 500GB + NV2 1TB + 2TB R10 + RGB most of THE THINGS! + Corsair 4000D Airflow + 2*ZyXEL NSA326 2*3TB @ R1 + Netgear RN2100 4*3TB @ R10 + RN204 4*4TB @ R5 + Synology DS216j 2*4TB @ SHR R1 + DS418 4*8TB @ SHR R6 | tmp: R5 3600@4.2 GHz + 32GB 2666@3066MHz + 2070 8GB + 1 TB NV2 & 512GB SN730

11600K@5.1 GHz + 32GB Corsair Vengeance RGB PRO 3200@3400 MHz + MSI RTX 2080 Super Gaming X Trio +
WDC Blue SN550 1TB + Black OEM SN730 500GB + Kingston A1000 480GB + A2000 500GB + NV2 1TB + 2TB R10 + RGB most of THE THINGS! + Corsair 4000D Airflow + 2*ZyXEL NSA326 2*3TB @ R1 + Netgear RN2100 4*3TB @ R10 + RN204 4*4TB @ R5 + Synology DS216j 2*4TB @ SHR R1 + DS418 4*8TB @ SHR R6 | tmp: R5 3600@4.2 GHz + 32GB 2666@3066MHz + 2070 8GB + 1 TB NV2 & 512GB SN730

AMD Ryzen 5800X3D | Noctua NH-D15 | Asus Prime X370-Pro | 32 GB G.Skill 3200 MHz CL16 | Asus GeForce RTX 3080 TUF Gaming OC | Samsung 970 EVO Plus 1 TB | EVGA SuperNOVA G2 750W | Fractal Design Define C
Alienware AW3423DW QD-OLED 3440x1440 175 Hz