Pentium III

Pentium III

The successor to the Pentium II from Intel. Introduced in the spring of 1999 at 500 MHz, the Pentium III architecture was similar to the Pentium II with the addition of 70 new instructions optimized for multimedia (see SSE). Pentium III CPUs subsequently exceeded the 1 GHz range in clock speed. The Pentium III technology was also used in the high-end Xeon chip. See Pentium.

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(processor, Intel)

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. http://intel.com/PentiumIII.