I don't know why you compare processor implementations and then talk as if that generalizes to all processor implementations of a given ISA. Intel Atom chips definitively aren't in the same performance ballpark as POWER9.
I mean it should be obvious. The ISA does not dictate memory performance, micro architecture, clock frequencies, manufacturing processes, number of cores, maximum allowed power consumption, etc. All of those affect performance but are independent of the ISA.
I mean it should be obvious. The ISA does not dictate memory performance, micro architecture, clock frequencies, manufacturing processes, number of cores, maximum allowed power consumption, etc. All of those affect performance but are independent of the ISA.