Yeah Zen should move load around to the best cores
IIRC. Not really sure how it does that, but seem to remember people saying it did this. Re throttling I was meaning more on multi core than single thread - due to accumulated heat from many cores. I wondered if it might account for that missing 10%? There's more than enough RAM in Beff'a system.
Edit: when Beffa's manual OC score is applied it hits the right place to correlate with the other CPUs that are doing it natively. This suggests there is something holding back the auto-overclock on multithreaded performance, that doesn't necessarily need to be doing so. Perhaps the PBO settings needs adjusting?