What EXACTLY is the difference between intel’s and amd’s ISA, if any?
Yes, the ISA is a document / specification, not hardware. Implementing all of it correctly is what makes something an x86 CPU, rather than just something with similarities to x86. See the x86 tag wiki for links to the official docs (Intel’s manuals). Intel and AMD’s implementations of the x86 ISA differ mainly in performance, … Read more