>are now coming round to Arm because it really does make a better product i.e battery life and thermals.
ISA doesn't imply performance characteristics.
It's like saying that programming language (syntax) has performance implication.
No, it doesn't. Everything is up to the compiler, runtime and standard library.
Of course there may be some feature that make compiler's life easier, but still things are way, way more complicated than "just take ARM ISA and you'll be king"
It's more the fact that power efficiency is something Arm values quite lot in their philosophy since their products are used in mobile and edge devices.
ISA doesn't imply performance characteristics.
It's like saying that programming language (syntax) has performance implication.
No, it doesn't. Everything is up to the compiler, runtime and standard library.
Of course there may be some feature that make compiler's life easier, but still things are way, way more complicated than "just take ARM ISA and you'll be king"
https://chipsandcheese.com/2021/07/13/arm-or-x86-isa-doesnt-...