The B450 Tomahawk MAX plus 5800X works fine.
The B450 Tomahawk MAX plus 5800X works fine.
You must verify the B450 supports the correct BIOS for the 5800X. It’s unlikely to be included by default, so you’ll need a compatible CPU to perform the update. This process involves some risk, as incorrect updates can damage your board.
Toma MAX's VRMs might not fully support 5800X. Check the specifications for compatibility.
The VRMs on the 4C029N are subpar—especially in a 4x2+2 layout. The heatsinks aren’t very effective either, but they’ll work just fine out of the box. If you plan to upgrade to something like a 5900X or 5950X, or if you intend to push the CPU hard, I’d strongly suggest a more powerful board with better VRMs, even though you might still manage to run those chips or overclock them.
You're curious about using a 5000 series Ryzen with your board and wondering if the BIOS updates via USB stick are reliable. It seems there might be some confusion about how BIOS updates work—updating the BIOS typically requires a CPU installation, not just a USB stick.