indeed, at the time i wrote this i never realised there where differences in behave of E0 stepping processors.What is your source?
I only found this post, which was the foundation for my claim: https://forums.servethehome.com/ind...phire-rapids-sp-es-works-it.41306/post-419746
Q0K* E0 work on ASRockRack C741 board, but Q03J E0 not.
but Q03J E0 work on ASUS W790, should not because its SPR-SP.
we know stepping D0 ES are working on ASUS W790 board, so something in late D0 and early E0 is same.