Intel 64

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Intel 64

A 64-bit upgrade to Intel's 32-bit x86 (IA-32) architecture. Originally designated as EM64T (Extended Memory 64 Technology), Intel 64 added a set of 64-bit instructions that were compatible with AMD's 64-bit instructions (see AMD64). Introduced in 2004, Xeons were the first CPUs to incorporate Intel 64 along with other enhancements such as the PCI Express bus and DDR2 memory.

With the introduction of Intel 64, Intel offers 64 bits in two CPU families: the 32/64-bit x86 (IA-32) line and the 64-bit Itanium (IA-64) line. See IA-64, x64, x86 and 64-bit computing.

Legacy Mode
PCs with Intel 64 CPUs that run only 32-bit software (OS, drivers and applications) will not experience any performance increase.

Compatibility Mode
When only the operating system and drivers have been recompiled for 64 bits, and the applications have not, the applications may experience only a slight performance increase.

64-Bit Mode
PCs take full advantage of the Intel 64 architecture when the operating system, all drivers and the applications have been recompiled for 64 bits.
References in periodicals archive ?
SUSE Linux Enterprise Server x86, AMD64 & iNTEL64 (1-2 CPU Sockets, Standard, Support 1 Physical, 3rd Year) - 55 units;2.
Fujitsu is the only company[2] in the TOP500 list using AMD's AMD64, Intel's Intel64 and IPF architectures and to obtain 80% efficiency or better from all of them.
Investors included Citigroup's e-Citi Unit, GE Equity, Intel Corporation, The Intel64 Fund, MCI WorldCom Venture Fund and Reuters.
Early investors included Citigroup's e-Citi Unit, GE Equity, Intel Corporation, The Intel64 Fund, MCI WorldCom Venture Fund and Reuters.
50 874-0050 25 SUSE Linux Enterprise Server for x86, AMD64 & Intel64 (per Server up to 32CPU Sockets) Priority 1-Year Subscription
Additional funding comes from venture capital firms including Atlas Venture, Charles River Ventures, iGate Ventures, The Intel64 Fund, QuestMark Partners and Riggs Capital.
Headquartered in Boston, Massachusetts, with offices worldwide, SpeechWorks is a privately held corporation with financing from Intel Corporation, The Intel64 Fund, SAP and venture capital firms.
Headquartered in Boston, with offices worldwide, SpeechWorks is a privately held corporation with financing from Intel Corporation, The Intel64 Fund, SAP and venture capital firms.
Headquartered in Boston, Massachusetts, with offices worldwide, SpeechWorks is a privately held corporation with financing from venture capital firms, Intel Corporation (through the Intel64 Fund), and SAP.
Early investors includedCitigroup's e-Citi Unit, GE Equity, Intel Corporation, The Intel64 Fund, MCI WorldCom Venture Fund and Reuters.