Optimizing VRM cooling for Ghostwire: Tokyo on ASRock A320M-HDV
Sprinting through Tokyo was a disaster; my frame rate would suddenly plummet from 60 FPS to a stuttery 25 FPS. It was incredibly stressful. The VRM on the ASRock A320M was hitting 102-108℃, triggering a brutal thermal throttle that tanked my CPU clock from 3.6GHz down to 1.2GHz. I tried disabling PBO enhancement in the BIOS, which dropped the temps by 8℃ but cost me 20% of my overall performance—a total trade-off I couldn't live with. Instead, I rigged up two 12cm side fans to blow directly onto the VRM heatsinks and set a CPU core voltage offset of -0.05V to cut down the heat. Monitoring with HWInfo showed VRM temps dropping to 75-82℃, and frame times stabilized from a wild 30-50ms to a consistent 16-20ms. I had some annoying fan resonance at first, but adding some rubber gaskets killed the noise. CPU temps now hover between 68-75℃. The resource scheduling is back to normal, and the game finally runs as intended.
