I'm not sure I agree with that. The unknown length of instructions in x86 does make decoders more power hungry. There's no doubt about that. That is a big problem for power efificency of x86 and the blog doesn't address that at all.
M1 really is a counterexample to all theory that Jim is saying etc. The real proof would be if same results were also reproduced on M1 instead of Zen
M1 really is a counterexample to all theory that Jim is saying etc. The real proof would be if same results were also reproduced on M1 instead of Zen