Originally introduced in 1978 with the 8086 CPU, ... The new ISA will establish a "common, converged vector instruction set" across all Intel CPU architectures, ...

Intel optimizes slimmed-down X86S instruction set — revision 1.2 eliminates 16-bit and 32-bit features. ... which Intel created alongside the famous 8086 chip back in the 1970s.

Intel releases X86S instruction set version 1.2, ... In its previous blog, Intel claimed that remnants from the 8086 and 386 eras have become unnecessary in our 64-bit world.

The big difference is that the 64-bit instruction set of the x86-64 is comparable to its 32-bit instruction set. With Intel's Itanium, the 32-bit and 64-bit modes are distinct, each having its own ...

Rather than extend its 32-bit instruction set, Arm offers a clean 64-bit implementation. To accomplish this, the ARMv8 architecture uses two execution states, AArch32 and AArch64.