Can someone elaborate for me on the "memory training" responsible for the long initial boot times the sticker warns about? I skimmed this https://www.asset-int

Can someone elaborate for me on the "memory training" responsible for the long initial boot times the sticker warns about? I skimmed this https://www.asset-intertech.com/resources/blog/2014/11/memory-training-testing-and-margining/ https://www.asset-intertech.com/resources/blog/2014/11/memor... and it sounds like a crutch for marginal silicon. How's it compare to Memtest86 and the like?