The MSI B450M-A Pro Max is compatible with the Ryzen 3 3100.
The MSI B450M-A Pro Max is compatible with the Ryzen 3 3100.
The upgrade should still work if you're planning to replace the CPU.
The board accommodates all four generations of processors and every model except depending on the BIOS update. You need to keep an eye on that. Regarding the VRMs, the board is built for 65W processors. Models with 90W or 105W will cause the VRMs to throttle and potentially fail within a short period if the Tcase delta is significant.
Tcase delta maintains internal temperature control. Ambient conditions and airflow around the board help reduce this difference. The power regulators aren't attached to heat sinks. Running a quiet case—like with a passive 200W design (no fans, Wraith Prism cooling)—typically makes the case warmer during operation than the room temperature. Still, I own a B450M-A and it performs well for low-power setups. I also use 2667mhz memory.
Avoid getting a budget board if you're planning future growth. MSI isn't worth it for someone with tough tastes. Very poor experiences. I use the Asus Tuf B550-PLUS in my 5900X setup. No issues at all. The PRO model has a 3.1 / 3.2 header, while the PLUS version lacks it.
I had to move a Ryzen 3600 to a different board and chose an ASUS TUF A520M Plus with Wi-Fi. I don’t know why that specific board didn’t work with the CPU and Flarex 3200 RAM. The RMA should handle it. I also got an MSI B450M-A Pro Max as a backup, and it’s functioning perfectly. Quality really varies by individual units.
You might encounter problems with any of these options. What sets my situation apart is that yours didn’t function properly. Mine operated smoothly until I attempted a GPU upgrade. MSI added confusion by claiming the B450 board supports a 5900X processor after a BIOS update, only to later deny it and warn it could damage the board. They also removed any confirmation about this support from their site. Because of their lack of reliability, I had to wait six months with an untested processor. Have you updated your BIOS? Does your board match that RAM speed? Were you enabled for RAM overclocking? Many boards need a BIOS update to run Zen3, but it’s possible the BIOS got corrupted during transfer or installation. Edited May 18, 2022 by An0maly_76 Updated with more details