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perf/watt/density would be the best way to measure. Frequency should NOT be normalized because x86 chips are designed to be high frequency parts. That is why me
by eek2121 3y ago
perf/watt/density would be the best way to measure. Frequency should NOT be normalized because x86 chips are designed to be high frequency parts. That is why measuring IPC is meaningless. A cutting edge ARM chip can possibly beat a modern x86 chip in terms of IPC, but the x86 chip will almost certainly scale to higher frequencies. Certain models of EPYC Genoa (Zen 4) for example, boost to 4GHz, and both Intel and AMD have chips that boost to 5.7+ GHz.
Density is important because if you can only have a max of, for example, 20 cores for an ARM solution, but 96 cores in the case of EPYC Genoa, Genoa is going to win out for any multi-core workload.