Comment by ColonelPhantom

Also, if you want LBR on Zen3 or earlier, you're SOL. I noticed that one the hard way.

Stuff like this is making me lean more towards getting an Intel for my next computer, at least on desktop where their worse power efficiency is less of an issue. But then they keep gating AVX-512 due to their E-cores not supporting it... You really can't win these days.