Number of supported CPU threads in macOS

[Xenobius]

According to the Open Core project description macOS supports only 64 CPU threads:

Ryzen and Threadripper(17h and 19h) | OpenCore Install Guide

Has anything changed in macOS Monterey?

 

[gilby101]

Has anything changed in macOS Monterey?

You need to experiment...

But unlikely until there is a Mac CPU which supports/requires more than 64 threads.

 

[Xenobius]

But unlikely until there is a Mac CPU which supports/requires more than 64 threads.

There is no such Mac YET.
But it would be a signal that Apple is preparing such a Mac Pro with an multicore Mx processor before autumn 2022 (the next version of macOS).

 

[frou]

The new Apple Silicon Mac Pro is said to be 40 cores, and Apple don't seem to do a HyperThreading equivalent on their own chips, so that will be 40 threads also.