Reviews of AMD’s Zen 5 processors this week surprised many, with lower-than-expected results. After some investigation, we discovered that turning off Simultaneous Multithreading (SMT) can yield notable performance gains, particularly in gaming. This article presents our findings, including comparisons with the 7800X3D and 7700X with SMT turned off.
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it’s obviously a scheduler/p-state bug in windows, look at the Linux performance
https://www.phoronix.com/review/ryzen-9600x-9700x
so, basically, the os isn’t tuned for the new chips yet.
the 2nd threads on smt-enabled cores are supposed to get hit last.
It’s an easy fix, sure.
But there are 3 manufacturers for them to schedule for. It should be ready way before anything ships.