AMD64 (also variously referred to by AMD in their literature and documentation as “AMD 64-bit Technology” and … See more

Intel 64 is Intel's implementation of x86-64, used and implemented in various processors made by Intel.
Historically, AMD has developed and produced processors with instruction sets patterned a… See more

VIA Technologies introduced their first implementation of the x86-64 architecture in 2008 after five years of development by its CPU division, Centaur Technology. Codenamed "Isaiah", the 64-bit architecture was unveil… See more

In 2020, through a collaboration between AMD, Intel, Red Hat, and SUSE, three microarchitecture levels (or feature levels) on top of the x86-64 baseline were defined: x86-64-v2, x86-64-v3, and x86-64-v4. These level… See more

Although nearly identical, there are some differences between the two instruction sets in the semantics of a few seldom used machine instructions (or situations), which are mainly used for system programming. Compilers … See more

In supercomputers tracked by TOP500, the appearance of 64-bit extensions for the x86 architecture enabled 64-bit x86 processors by AMD and Intel to replace most RISC processor architectures previously used in such syste… See more

The following operating systems and releases support the x86-64 architecture in long mode.
Preliminary infrastructure work was started in February 2004 for a x86-64 port. This developme… See more