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x86-64 (also known as x64, x86_64, AMD64, and Intel 64) [note 1] is a 64-bit version of the x86 instruction set, first announced in 1999. It introduced two new modes of operation, 64-bit mode and compatibility mode, along with a new 4-level paging mode.
Windows Web Server; 6003 [c] IA-32, x86-64, Itanium: January 14, 2020 Windows Server 2008 R2: Windows Server 7 October 22, 2009 NT 6.1 7601 [d] x86-64, Itanium: January 14, 2020 Windows Server 2012: Windows Server 8 September 4, 2012 NT 6.2 Windows Server Foundation; Windows Server Essentials; Windows Server Standard; Windows Server Datacenter ...
The term 64-bit also describes a generation of computers in which 64-bit processors are the norm. 64 bits is a word size that defines certain classes of computer architecture, buses, memory, and CPUs and, by extension, the software that runs on them. 64-bit CPUs have been used in supercomputers since the 1970s (Cray-1, 1975) and in reduced ...
Microsoft Windows, for example, designates its 32-bit versions as "x86" and 64-bit versions as "x64", while installation files of 64-bit Windows versions are required to be placed into a directory called "AMD64". [20] In 2023, Intel proposed a major change to the architecture referred to as X86S (formerly known as X86-S). The S in X86S stands ...
On April 25, 2005, Microsoft released Windows XP Professional x64 Edition and Windows Server 2003 x64 editions to support x86-64 (or simply x64), the 64-bit version of x86 architecture. Windows Vista was the first client version of Windows NT to be released simultaneously in IA-32 and x64 editions. As of 2024, x64 is still supported.
Pages in category "x86-64 operating systems" The following 84 pages are in this category, out of 84 total. ... Windows 8; Windows 8.1; Windows 10; Windows 11; Windows ...
Windows CE was a distinctly different kernel, rather than a trimmed-down version of desktop Windows. It is supported on Intel x86 and is compatible on MIPS, ARM, and Hitachi SuperH processors. Name
However, "client" versions of 32-bit Windows (Windows XP SP2 and later, Windows Vista, Windows 7) limit physical address space to the first 4 GB for driver compatibility [16] even though these versions do run in PAE mode if NX support is enabled. Windows 8 and later releases will only run on processors which support PAE, in addition to NX and SSE2.