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64-bit
(redirected from 64-bit application)

    Also found in: Wikipedia, Hutchinson 0.09 sec.

64-bit

See bit specifications.

(architecture)64-bit - A term describing a computer architecture based around an ALU, registers and data bus which are 64 bits wide.

64-bit processors were quite common in 1996, e.g. Digital Alpha, versions of Sun SPARC, MIPS, IBM AS/4000. the PowerPC and Intel were expected to move to 64 bits at their next generation - PPC 620 and Intel P7.

A 64-bit address bus allows the processor to address 18 million gigabytes as opposed to the mere 4 gigabytes allowed with 32 bits. There were in 1996 already hard disks which can hold over 4GB. Floating point calculations can also be more accurate.

A 64-bit OS is needed as well to take advantage of the CPU. In 1996 there were only a few 64-bit operating systems, including OS/400, Digital Unix, Solaris (partialy). A 32-bit OS can run on a 64-bit CPU.


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nbsp;platform enables best-in-class performance, while allowing customers to seamlessly transition to powerful 64-bit applications as we move closer to the day when 32-bit-only systems will become obsolete," said Marty Seyer, corporate vice president and general manager of AMD's Microprocessor Business Unit.
AMD announces new 64-bit applications demonstrate performance ... by EDP Weekly's IT Monitor
mostly contingent on when 64-bit application become available.
Faster [and] faster go the workstations: workstations are faster, ... by Gould, Lawrence S. / Automotive Design & Production
As the lukewarm reception for Itanium has demonstrated, 64-bit applications remain scarce--and Intel had that processor under development with Hewlett-Packard for 10 years before its introduction.
AMD's Opteron aims at Itanium in 64-bit battle by Piven, Joshua / Computer Technology Review
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