3 ms·
Apple already has an ~80% IPC lead over Intel. So, me.
by Veedrac 6y ago
Apple already has an ~80% IPC lead over Intel. So, me.
- willis936 6y agoGonna need some heavy sources on that one. I can make an ALU in an FPGA that only takes in one bit data and adds it. That would take the IPC crown. Is it a useful statement? No. Comparing ARM IPC to x86 IPC is far more complicated than measuring length.
- Veedrac 6y agoSee SPECint2006 in [1] (ctrl-f “absolute performance”). SPECfp is maybe more like a 60% IPC lead, but less relevant to typical users. I've taken some measurements of the A13's microarchitecture (mostly, its ROB size), and Apple has a bigger lead here than you'd expect. I don't want to share his data without permission, but the bulk of the code is at [2] and I'd be happy to help anyone able to run code on an iDevice repeat the same measurements. [1] https://www.anandtech.com/show/14892/the-apple-iphone-11-pro-and-max-review/4 https://www.anandtech.com/show/14892/the-apple-iphone-11-pro... [2] https://github.com/Veedrac/microarchitecturometer https://github.com/Veedrac/microarchitecturometer
- Veedrac 6y agoSorry, I meant to say “I've taken some measurements of the A13's microarchitecture (mostly, its ROB size) with Andrei Frumusanu from AnandTech”.