How high it goes also depends on the CPU design. We know TSMC's 7NM can make CPUs that hit 4.5ghz, the Ryzen 5000 does this. It's also quite likely that TSMC's

How high it goes also depends on the CPU design. We know TSMC's 7NM can make CPUs that hit 4.5ghz, the Ryzen 5000 does this. It's also quite likely that TSMC's 5nm can still hit the 4ghz+ range in a CPU application. What we don't know is if the M1 can actually run at those frequencies, too, or if there's other bottlenecks that prevent the M1 from clocking higher than it does.