Question pc Crashes when Ram Frequency is auto or higher than 1600Mhz

Oct 5, 2021
Hello, my pc have a Problem where under load the screen goes black and fans keep spinning and the only thing i can do to use the pc again is to flip the power switch on the Psu, but after some testing and google, when i limit the frequency of the ram sticks to 1600Mhz it never crashes, and i tried with 1 ram stick and another set of ram sticks ( cosair dominator) and even tried another Gpu just to be sure.
its still new (under warrenty) and i think its the motherboard. but in making a thread here for peoples opinoins since im new to pc building.

Best regards Troels Møller

Cpu: ryzen 9 5900x
Gpu: Msi rtx 3080 suprim
motherboard: ASUS ROG Crosshair VIII Impact
Ram: Corsair Vengeance LPX DDR4 3200MHz 32GB
cpu cooler: noctua nh-d15s
ssd: Samsung 860 PRO 1TB SSD
nvme: Samsung 970 EVO Plus 250G
psu: Corsair HX1000
fans: Noctua NF-P12 redux