Intel® Pentium® III Processor Specification Update

This document is an update to the specifications contained in the Pentium® III Processor datasheet. This document is intended for hardware system manufacturers and software developers of applications, operating systems, or tools. It contains specification changes, S-specs, errata, specification clarifications, and documentation changes. The Pentium® III processor may contain design defects or errors known as errata which may cause the product to deviate from published specifications. Current characterized errata are available on request.

  • Specification Changes are modifications to the current published specifications. These changes will be incorporated in the next release of the specifications.
  • S-Specs are exceptions to the published specifications, and apply only to the units assembled under the S-spec.
  • Errata are design defects or errors. Errata may cause the Pentium® III processor's behavior to deviate from published specifications. Hardware and software designed to be used with any given stepping must assume that all errata documented for that stepping are present on all devices.
  • Specification Clarifications describe a specification in greater detail or further highlight a specification's impact to a complex design situation. These clarifications will be incorporated in the next release of the specifications.
  • Documentation Changes include typos, errors, or omissions from the current published specifications. These changes will be incorporated in the next release of the specifications.

This location contains the most current Specification Update. The revision number is indicated by the last two digits in its 'pdf' file name. Specification Updates are revised only as changes occur.

This location contains the most current Specification Update. The revision number is indicated by the last two digits in its 'pdf' file name. Specification Updates are revised only as changes occur.

If a new revision is created, it will be posted per the following 2008 schedule: January 16, February 13, March 12, April 16, May 14, June 11, July 16, August 13, September 10, October 15, November 12, December 10.

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