How to stabilize XMP on Maxsun MS-eSport B850M WIFI ICE?
Right in the middle of a firefight in the jungle, the system would just reboot without any warning. It's incredibly stressful when you're trying to make progress. The default XMP profile at 6000MHz on the Maxsun MS-eSport B850M WIFI ICE passed basic tests, but under actual gaming loads, the memory controller voltage was swinging between 1.1V and 1.25V, causing random parity errors. I tried dropping the frequency to 5600MHz, which stopped the reboots but cost me about 10 FPS, and I wasn't okay with that performance hit. I went back into the BIOS, locked the SoC voltage at 1.2V, and loosened tRFC from 480 to 520. After 4 passes of MemTest86, the error count went from 2 per hour to zero. I actually tried 1.3V SoC at first, but the RAM temps spiked to 62℃, so I backed it off to 1.2V. Now RAM is 48-54℃, VRMs are 60-65℃, and VRAM is 58-63℃.
