Apparently this might be specific to AM4 iGPU models? I've seen suggestions that for PRO, the memory controllers were redone. Wouldn't surprise me if the story

Apparently this might be specific to AM4 iGPU models? I've seen suggestions that for PRO, the memory controllers were redone. Wouldn't surprise me if the story is that Cezanne had a design error resulting in inoperational ECC, especially given that unlike done other models in the series they are not chiplet based.