Source : Free On-Line Dictionary of Computing

Pentium III
     
         The {microprocessor} that was {Intel
        Corporation}'s successor to the {Pentium II}, introduced in
        1999 with a 500 {MHz} {clock rate}.  The Pentim III is very
        similar to the Pentium II in architecture.  Its external {bus}
        can be clocked at 100 or 133 MHz, it can have up to 512 {KB}
        of {secondary cache}, and it comes in various packages
        including {SECC2} and {FC-PGA}.
     
        The Pentium III has a {P6} {Dynamic Execution}
        {microarchitecture}, a {multi-transaction system bus}, and
        {MMX}, like the Pentium II.  It adds {Dual Independent Bus}
        (DIB) Architecture, the {Intel Processor Serial Number},
        Internet {Streaming SIMD Extensions}, 70 new instructions.
        Some versions also include an {Advanced Transfer Cache} and
        {Advanced System Buffering}.
     
        When Intel released a 1.13 {GHz} version of the Pentium III
        processor using a 0.18 {micron} fabrication process on
        2000-07-31, it was the world's highest performance
        microprocessor for PCs.
     
        {Home (http://www.intel.com/PentiumIII)}.
     
        (2000-10-05)