How to fix VRM overheating on MSI B450M MORTAR MAX?
The power delivery on this board was basically frying eggs when running modern titles; VRM temps were hitting 105℃, making the CPU clock jump around like a rollercoaster. I tried slapping three 120mm fans on the front panel, but the temps only dropped by 2℃—the VRM area was still scorching, and the whole attempt felt like a waste of time. I decided to go nuclear and glued 5mm pure copper heatsinks onto the VRM blocks and synced my case fans to the CPU temperature. In HWMonitor, VRM temps plummeted from 102-108℃ down to 78-84℃, and my minimum FPS climbed from 35 to 58. The first time I tried this, the copper was too thick and I couldn't fit my RAM sticks, so I had to swap to 3mm slices. CPU temps now sit at 68-76℃ and RAM is at 45-52℃. Stress tests confirm the clocks aren't dipping anymore, with VRMs stable at 78-84℃.
