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

Was AMD64 with SSE2 the most elegant way to extend x86 to 64 bit computing for the next decades, while maintaining backward compatibility to x86, or could AMD have done better? - Quora

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

COMPUTELIFY (u/computelify) - Reddit

Intel Explores Transition to 64-Bit-Only x86S Architecture

Computer Hardware Museum

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

PDF) Performance Characterization of SPEC CPU2006 Integer Benchmarks on x86- 64 Architecture

Intel proposes x86S, a 64-bit only architecture

An Introduction to 64-bit Computing and x86-64

c - How can a 16bit Processor have 4 byte sized long int? - Stack Overflow