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x86-64 (also known as x64, x86_64, AMD64, and Intel 64) [note 1] is a 64-bit extension of the x86 instruction set architecture first announced in 1999. It introduces two new operating modes: 64-bit mode and compatibility mode, along with a new four-level paging mechanism.
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 ...
x86 (with and without FPU and TSC), x86-64, PowerPC, ARM (StrongARM; ARM7: clps711x-family, Cirrus Logic EP7xxx, CS89712, PXA25x), m68k (supporting both MMU and NOMMU cpus) RTEMS BSD
AMD has not used K-nomenclature codenames in official AMD documents and press releases since the beginning of 2005, when K8 described the Athlon 64 processor family. AMD now refers to the codename K8 processors as the Family 0Fh processors. 10h and 0Fh refer to the main result of the CPUID x86 processor instruction.
Mass-produced x86-64 chips for the general market were available four years later, in 2003, after the time was spent for working prototypes to be tested and refined; about the same time, the initial name x86-64 was changed to AMD64. The success of the AMD64 line of processors coupled with lukewarm reception of the IA-64 architecture forced ...
Itanium never sold well outside enterprise servers and high-performance computing systems, and the architecture was ultimately supplanted by competitor AMD's x86-64 (also called AMD64) architecture. x86-64 is a compatible extension to the 32-bit x86 architecture, implemented by, for example, Intel's own Xeon line and AMD's Opteron line.
Pages in category "x86-64 operating systems" The following 84 pages are in this category, out of 84 total. This list may not reflect recent changes. A.
64 Camaro 800–1300 64 130 Sempron: Thoroughbred-B 1500–2000 166 FSB 256 Thorton 1500–2000 Barton 2000–2200 166, 200 FSB 512 K8: 130 Opteron: Sledgehammer 100 1 No 1400–2400 800 HT 64+64 1024 Socket 940: DDR: MMX, 3DNow!+, SSE, SSE2: PowerNow! AMD64, ccNUMA + SSE2 + PowerNow! + AMD64 + NX Bit. 200 800 90 Venus 100 1600–3000 Socket ...