It's difficult to say why AMD's implementation has held up better. One interesting thing I noted looking at wikichip's info [0] was that Zen calls out that Cach

It's difficult to say why AMD's implementation has held up better. One interesting thing I noted looking at wikichip's info [0] was that Zen calls out that Cache is tagged by thread. I wonder whether Intel's HT did/does the same or not. [0] https://en.wikichip.org/wiki/amd/microarchitectures/zen#Simultaneous_MultiThreading_.28SMT.29 https://en.wikichip.org/wiki/amd/microarchitectures/zen#Simu...