[londons_explore]

AMD CPUs have pretty poor single threaded performance.

Perhaps that because they haven't taken the speed short-cuts that Intel took...?

[jandrese]

Didn't Ryzen close the single thread performance gap quite a bit?

But yeah, protecting against it means implementing memory protection in more places in the CPU. More gates and the possibility of becoming a bottleneck.

[arcticbull]

With Ryzen, they're pretty much equal on an IPC basis.