4 ms·
It's not clear if the ISA difference is so meaningful, perhaps it's only a small part of the performance boost. Don't forget that Apple moved from PPC to x86 to
by sharikous 4y ago
It's not clear if the ISA difference is so meaningful, perhaps it's only a small part of the performance boost. Don't forget that Apple moved from PPC to x86 to get better perf/watt and the PPC ISA is closer to ARM than x86.
Intel or AMD back on their feet can probably match Apple in perf/watt. And I guess they are the closest competitors in the PC market.
- genewitch 4y agoi thought apple switched to x86 because two console companies were buying most of the PPC fab output? I distinctly remember that being the reasoning. Until Ryzen hit with the 3000 series x86 didn't have a better perf/watt than PPC, at a glance. In the 10 years between my 40 core HP server's release and the Ryzen 5950x's 16 cores, performance increased ~10%, but the TDP of the 5950x is 10% of the quad xeons in the HP. This is ignoring the fact that a single 5950x cost less in any market than a single xeon in that HP upon release. Does anyone else remember the Cavium ThunderX processors? Whatever happened to those? the perf/watt on those was supposed to be outstanding...