Dealing with voltage instability on MSI B450M MORTAR MAX?
Riding through Saint Denis was a nightmare; frames would plummet from 60 down to 20 in a heartbeat. The VRMs on the MSI B450M MORTAR MAX were struggling when the CPU boosted to 4.2GHz, with voltage swings hitting 0.11V, causing instant clock throttling. I tried Windows Power Saving mode, which lowered temps but cost me 15 FPS—just frustrating. I eventually went into the BIOS and capped the max boost at 3.9GHz and tightened the fan response time to 0.1s. The RivaTuner frame time graph went from a jagged mess to a smooth 14-18ms. I tried pushing 4.0GHz, but the system rebooted twice during stress tests until I nudged the SOC voltage to 1.1V. CPU temps stayed in the 68-74℃ range. After a three-hour marathon session, the stuttering is gone and the controls feel incredibly responsive.
