- x86 echnically x86 simply refers to a family of processors and the instruction set they all use. It actually doesn't imply anything specific about data sizes.
- IA-32 (short for "Intel Architecture, 32-bit", sometijmes also called i386)。
- IA-64, so called Intel Itanium architecture, named
安腾in Chinese，is already dead。 - x86-64 (also known as x64, x86_64, AMD64 and Intel 64)。
In certain context, x86 means 32-bit version，x64 means 64-bit version，jdk realease is good example.
Sometimes you may encounter amd64, is another name of x86-64，because AMD launch the 64-bit x86 earlier.