I don't have one of these systems, but my laptop does a quite slow training process on cleared CMOS or new memory, and it definitely doesn't do it every time. I

I don't have one of these systems, but my laptop does a quite slow training process on cleared CMOS or new memory, and it definitely doesn't do it every time. I would imagine they only rerun this kind of thing if the SPD doesn't match the one from the stored training, or something along those lines.