Yes, x86 will always have some power disadvantage because ARM's heritage is low power embedded devices (and RISC). x86 has other advantages like a very mature a

Yes, x86 will always have some power disadvantage because ARM's heritage is low power embedded devices (and RISC). x86 has other advantages like a very mature and optimized software stack with good compilers. Apple also has the advantage of cramming every thing on a single piece of silicon while AMD has gone in for the chiplet approach. The single piece of silicon reduces yields but increases performance with a lower power draw. The chiplet approach followed by AMD is more modular, less risky and cost effective. So if both AMD and Apple use the same TSMC node _and_ AMD went in for "cost is not an objective" and cram everything on a single piece of silicon _and_ add HBM (aka unified memory) it would be real interesting for the two to go "head to head". I would definitely be interested in paying good dollar for such X86 client system ! I hope someone at AMD is listening !