I’ve been a general skeptic of exactly how much the power and performance to power stats are attributable to the ARM instruction set or architecture versus the fact that Apple just locks up TSMC’s latest and greatest node for a year before everyone else. AMD’s CPUs are still x86_64 but achieve similar performance per watt as the Apple silicon on the same node and similar TDPs.

So if it turns out that TSMC has the secret sauce, then maybe we don’t need to move laptops over to ARM at all.