How to fix CPU throttling on MSI MPG Z890 EDGE TI in Cyberpunk?
This board is a total power hog when running Path Tracing. After two hours of play, my minimum FPS tanked from 80 down to 45, which is just embarrassing. The VRM on the MSI MPG Z890 EDGE TI WIFI builds up heat quickly during high-frequency instructions, triggering a limit that made the CPU clock swing between 5.4GHz and 4.8GHz. I tried undervolting in the BIOS, but that just tanked my minimums to 30 FPS—a terrible trade-off. I ended up mounting a small fan to blow directly on the VRM area, bumped the VRM fan speed to 90%, and disabled processor power saving in Windows. HWInfo showed the VRM temps drop from 85-98℃ down to 72-78℃, and the stuttering vanished. The extra fan caused some annoying chassis resonance at first, but a rubber dampening pad fixed it. CPU temps now sit at 75-81℃. Stress tests show the frequency curve is finally smooth again.
