I’ve heard the power efficiency is less “unique to ARM” and more due to different performance priorities of current x86 designs. The Apple M-series targets a different power/performance tradeoff than Intel and AMD.
Recent Ryzens, for example, often can be set in an “Eco mode” for, say, 80% of the performance at 50% of the energy usage, just by tweaking clocks and voltages. A full-out efficient design x86 could probab;y do even better.
I’ve heard the power efficiency is less “unique to ARM” and more due to different performance priorities of current x86 designs. The Apple M-series targets a different power/performance tradeoff than Intel and AMD.
Recent Ryzens, for example, often can be set in an “Eco mode” for, say, 80% of the performance at 50% of the energy usage, just by tweaking clocks and voltages. A full-out efficient design x86 could probab;y do even better.