I recently upgraded to the Mag B550M Mortar to replace my ageing B350M Mortar, this was because I was getting corrected WHEA 18 errors even at 2400MHz, so I figured the CPU VRMs were dying.
I've tried everything I can think of to match my old profile on this new board, but I just can't do it. I haven't even managed to POST past 3200MHz, which is ridiculous because it's a much better board. Even running with one stick in A2, I can't get it to post at >3200MHz. I've tried tonnes of different impedances, bus cad strengths etc, nothing works so far. I feel like I'm at the end of my tether, and I should just give up and accept 3200MHz.