How to calibrate power delivery on ASRock Z370M Pro4?
Watching my frame rate swing wildly between 144 and 60 FPS was infuriating; I honestly thought my GPU drivers were toasted. After checking HWMonitor, it turned out the VRM on the ASRock Z370M Pro4 was hitting a scorching 96-102℃ under load, triggering a hard throttle that tanked my clock speeds. I tried slapping two extra fans in the case, but that only dropped the temp by 2℃—totally useless against such a weak power design. I eventually went into the BIOS and capped the PL1 power limit at 65W and PL2 at 80W, while adding a -0.05V core voltage offset. HWMonitor showed the VRM temps immediately dropping to 74-80℃, and the frequency dips vanished. I did notice some slight clock instability in heavy fights until I locked my RAM at 2666MHz. The CPU now sits between 68-74℃; I lost about 3% raw performance, but I'll take that over constant stuttering any day. The game finally feels responsive, and the mouse movement is actually snappy now.
