zlacker

>>evolve+(OP)
Can 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.

>>Perz1v+y83
The instruction set has marginal impact. But many power efficient chips happen to be using the ARM instruction set today.

>>fulafe+Ye3
I think that's still highly debatable. Intel and AMD claim the instruction set makes no difference... but of course they would. And if that's really the case where are the power efficient x86 chips?

Possibly the truth is that everyone is talking past each other. Certainly in the Moore's Law days "marginal impact" would have meant maybe less then 20%, because differences smaller than that pretty much didn't matter. And there's no way the ISA makes 20% difference.

But today I'd say "marginal impact" is less than 5% which is way more debatable.