FACTOID # 29: 73.3% of America's gross operating surplus in motion picture and sound recording industries comes from California.
 
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x64 is Microsoft Corporation's marketing designation for the Advanced Micro Devices AMD64 and Intel EM64T 64-bit Instruction Set Extensions to the x86 architecture, which were substantially similar as of 2004. Microsoft Corporation (NASDAQ: MSFT), (founded 1975), headquartered in Redmond, Washington, USA, is the worlds largest software company (with over 50,000 employees in various countries, as of May 2004). ... For other possible meanings of AMD see AMD (disambiguation) Advanced Micro Devices, Inc. ... AMD64 Logo AMD64 (also x86-64 or x64) is a 64-bit microprocessor architecture and corresponding instruction set designed by Advanced Micro Devices. ... Intel Corporation (NASDAQ: INTC, SEHK: 4335), founded in 1968 as Integrated Electronics Corporation, is a U.S.-based multinational corporation that is best known for designing and manufacturing microprocessors and specialized integrated circuits. ... Extended Memory 64-bit Technology (EM64T) is Intels implementation of AMD64, a 64-bit extension to the IA-32 architecture. ... In computing, a 64-bit component is one in which data are processed or stored in 64-bit units (words). ... 2004 is a leap year starting on Thursday of the Gregorian calendar. ...


The "64-bit" designation refers to many aspects of the architecture: the width of the general purpose registers; the widest integer and logical operations supported by the processor; the size of values pushed and popped from the stack; and the width of the pointer data type, or virtual addresses. As of December 2005, current implementations of the x64 architecture only implement the low-order 48 bits of virtual addresses, but pointers are nevertheless 64 bits wide and all 64 bits must be correctly asserted.


As implementations might differ, for instance concerning IOMMU bypass for DMA mapping over 4GB, or additional instructions might be offered in newer processors, use of the x64 designator is mostly intended to signify the mere presence of extensions, rather than endorse specific processor implementations. Thus the x64 appellation does not indicate whether the operating system or software is optimally working with one processor or another. DMA can refer to: In computing: Direct Memory Access (most common) Dynamic memory allocation Document Management Alliance DMA Design - The former name of Rockstar North, a game developer Digital media adapter - In consumer electronics, for use between computers and other equipment (stereos, TVs, etc. ... Intel 80486DX2 microprocessor in a ceramic PGA package A central processing unit (CPU), or sometimes simply processor, is the component in a digital computer that interprets instructions and processes data contained in software. ... An operating system is a special computer program that manages the relationship between application software, the wide variety of hardware that makes up a computer system, and the user of the system. ... Computer software (or simply software) refers to one or more computer programs and data held in the storage of a computer for some purpose. ...


Internally, x64 versions of Windows use AMD64 moniker to designate various components which use 64-bit technology for IA-32 processors (for example, the system folder on an installation CD is named "AMD64" instead of "i386" in 32-bit versions). It has been suggested that this article or section be merged with X86 assembly language. ...


Microsoft products using the name "x64"

Microsoft Windows XP Professional x64 Edition released on April 25, 2005 by Microsoft is a variation of the typical 32-bit Windows XP operating system for x86 personal computers. ... Windows Server 2003 is the name of Microsofts line of server operating systems. ... Windows Vista is the next major version of Microsoft Windows, the proprietary operating system developed by Microsoft. ... The Microsoft . ...

External links

  • Windows Server 2003 x64 Editions Product Overview

  Results from FactBites:
 
X64 - Wikipedia, the free encyclopedia (284 words)
As of December 2005, current implementations of the x64 architecture only implement the low-order 48 bits of virtual addresses, but pointers are nevertheless 64 bits wide and all 64 bits must be correctly asserted.
Thus the x64 appellation does not indicate whether the operating system or software is optimally working with one processor or another.
Internally, x64 versions of Windows use AMD64 moniker to designate various components which use 64-bit technology for IA-32 processors (for example, the system folder on an installation CD is named "AMD64" instead of "i386" in 32-bit versions).
White Paper: Benefits of x64 for Audio Workstations (1891 words)
The x64 architecture is an extension to the current x86 architecture used by Intel and AMD processors.
The x64 architecture extends this limit to 2 40, which is 1024 GB or 1 terabyte (TB).
Furthermore, on x64 processors all floating point math is computed using Streaming SIMD Extensions technology (SSE/SSE2), which means the DSP code can exploit parallelism in the data, for example by processing stereo streams in parallel.
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