?? I’m not following. sure you can run arm based CPUs as a mobile device, but performance of large applications or x86 applications is poor.

there is also the addressable memory space issue that exists due to most arm core designs targeting phones… the bus is super limited, despite the architecture technically supporting much much more.

current RiscV cores suffer this same flaw as well.

the reason arm cores have better battery life is they are designed with phones in mind… not a desktop cpu. x86 mobile CPUs are cut down desktop CPUs with tdp restrictions. there is a massive difference as a result.

we are talking completely different design philosophies. it’s like comparing a ebike to a sports car… sure the ebike gets great energy economy when you scale the batteries. it’s half petal powered and has tiny draws on lightweight frame. it’s apples to oranges.

motorcycles would be more apt, but for arm, none really exist outside of obscenely priced workstations.