>> Seems like AMD could equal or beat M1 if they wanted.
Sometime around 5? years ago AMD was planning to have an ARM option. You'd get essentially an ARM core in an AMD chip with all the surrounding circuitry. They hyped it so much I wondered if they might go further than just that.
Further? Maybe a core that could run either ISA, or a mix of both core types. I dunno, but they dumped that (or shelved it) to focus on Zen, which saved them. No doubt the idea and capability still exist within the company. I'd like to see them do a RISCV chip compatible with existing boards.