How to fix VRM throttling on Onda A520-VH-W in BF V?
This motherboard is basically a torture test for CPU thermals. Every time a firefight starts, the FPS tanks, and it's honestly pathetic. The power delivery on the Onda A520-VH-W is way too thin for a 6-core CPU at full tilt; the VRMs hit 100℃ instantly, causing the clock speed to bounce violently between 3.2GHz and 4.2GHz. I tried stuffing three extra fans in the case to blow directly on the board, but besides making my PC sound like a vacuum cleaner, temps only dropped by 3℃. I finally gave up and went into the BIOS to cap the long-term power limit (PL1) at 65W and applied a -0.05V core offset to reduce the heat. In stress tests, I lost about 0.2GHz of peak boost, but my FPS stopped swinging between 40-80 and settled at a smooth 60-65. I had a bit of a struggle at first where the system lagged during boot because the limits were too tight, but adjusting PL2 fixed it. VRM temps are now 85-90℃. I exported the voltage logs to verify, and fans are steady at 1400-1600RPM.
