Xp Professional 64 [upd] — Windows

It was not a successor to Windows XP Professional (32-bit), but rather a specialized offshoot aimed at technical workstations, power users, and early adopters of 64-bit computing. In the early 2000s, 64-bit computing was largely confined to Intel’s Itanium architecture, which ran Windows XP 64-Bit Edition for Itanium (a different, incompatible codebase). However, Itanium failed to gain traction in desktop or general-purpose workstation markets.

1. Overview Windows XP Professional x64 Edition was released by Microsoft in April 2005 (generally available by late April). Unlike the standard 32-bit version of Windows XP, this edition was designed to run on 64-bit extended systems —specifically, processors based on the x86-64 architecture (AMD64 and later Intel EM64T). windows xp professional 64

In 2003, AMD introduced the and Athlon 64 processors, extending the x86 instruction set to 64 bits while retaining backward compatibility with 32-bit applications (x86-64). Intel later adopted this under the name EM64T . It was not a successor to Windows XP