Windows XP Professional x64 Edition
Screenshot of Windows XP Professional x64 Edition running the Luna visual style, showing the start menu and the "About Windows" window | |
| Developer | Microsoft |
|---|---|
| OS family | Windows NT |
| Working state | No longer supported |
| Source model | |
| Initial release | April 25, 2005 |
| Final release | Service Pack 2 with May 14, 2019 security update (5.2.3790.6787) / April 19, 2019 |
| Kernel type | Hybrid (NT) |
| Default user interface | Graphical user interface |
| License | Proprietary commercial software |
| Official website | Windows XP Professional x64 Edition overview (archived at Wayback Machine) |
| Support status | |
| Mainstream support ended on April 14, 2009 Extended support ended on April 8, 2014 | |
| Part of a series of articles on |
| Windows XP |
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| Siblings |
Windows XP Professional x64 Edition is an edition of Microsoft's Windows XP operating system that supports the x86-64 architecture. It was released on April 25, 2005, alongside the x86-64 versions of Windows Server 2003.
Windows XP Professional x64 Edition is designed to use the expanded 64-bit memory address space provided by the x86-64 64-bit extensions to the x86 IA-32 architecture, which was implemented by AMD as "AMD64", found in AMD's Opteron, Athlon 64 chips (and in selected Sempron processors), and implemented by Intel as "Intel 64" (formerly known as IA-32e and EM64T), found in some of Intel's Pentium 4 and most of Intel's later chips since the Core series.
Windows XP Professional x64 Edition uses the same kernel and code tree as Windows Server 2003 and is serviced by the same service packs. However, it includes client features of Windows XP such as System Restore, Windows Messenger, Fast User Switching, Welcome Screen, Security Center and games, of which Windows Server 2003 does not have.
During the initial development phases (2003–2004), Windows XP Professional x64 Edition was named Windows XP 64-Bit Edition for 64-Bit Extended Systems and later as Windows XP 64-Bit Edition for Extended Systems, as opposed to 64-Bit Edition for Itanium Systems for Windows XP 64-Bit Edition, as the latter was designed for the IA-64 (Itanium) architecture.