Intel proposes x86S, a 64-bit CPU microarchitecture that does away with legacy 16-bit and 32-bit support

x86-64 - Wikipedia

Zen 4c: AMD's Response to Hyperscale ARM & Intel Atom

x86 - Wikipedia

Intel's X86S Proposal Cuts Legacy Cruft For Streamlined 64-Bit Only CPUs

Microsoft wants Windows 12 to run on its own silicon.…

Intel's X86S Proposal Cuts Legacy Cruft For Streamlined 64-Bit Only CPUs

If you are an x86 CPU expert, what are your thoughts on Intel Advanced Performance Extensions, as I have previously asked about Intel's proposed x86s? - Quora

32-Bit Instruction - an overview

Classic.Ars: An Introduction to 64-bit Computing and x86-64

Intel x86S is a new 64-bit architecture that removes 32- and 16-bit mode support

x86 - Wikipedia