alt Hacker NewsCan someone tell me how much more power efficient is ARM actually? Like under load when gaming, not in a phone that sleeps most of the time. I've heard both claims, that it's still a huge difference and that for new AMD Zen it's basically the same.
Replies
bigyabai • today at 7:12 PM
It's workload-dependent. On-paper, ARM is more power-efficient at idle and simple ops, but slows down dramatically when trying to translate/compose SIMD instructions.
The instruction set has marginal impact. But many power efficient chips happen to be using the ARM instruction set today.