64-bit processor
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64-bit processor


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DEFINITION - A 64-bit processor is a microprocessor with a word size of 64 bits, a requirement for memory and data intensive applications such as computer-aided design (CAD) applications, database management systems, technical and scientific applications, and high-performance servers. 64-bit computer architecture provides higher performance than 32-bit architecture by handling twice as many bits of information in the same clock cycle.

The 64-bit processor is backwards compatible with older applications and operating systems; it detects whether an application or operating system is 16-bit, 32-bit, or 64-bit and computes accordingly. This is essential for enterprise situations where purchasing new software is not feasible.

Intel, IBM, Sun Microsystems, Hewlett Packard, and AMD currently develop or offer 64-bit processors.

Learn more about Rack mount server and x86 hardware
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LAST UPDATED: 27 Mar 2007

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More resources from around the web:
- HP's Integrity servers use the 64-bit Itanium processor developed jointly by HP and Intel.
- AMD offers several servers that use its 64-bit Athlon processor.
- ElectronicsNews.com.au reports that "AMD and Intel 64-bit architecture 'almost identical.'"
- On Bitpipe, HP offers a white paper, "Choosing the Best Architecture for Data Protection in Your SAN?"





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