Intel Pentium III
The Intel Pentium III uses the same type of processor as the Pentium II but has 70 new multimedia instructions. These new instructions are called Internet Streaming SIMD Extensions (SSE) and are an extension of the MMX instruction set. Sometimes these instructions are referred to as MMX2 or Katmai New Instructions.
Newer versions of the Pentium III support a 133MHz system bus and a more advanced L2 cache design that runs at the same clock speed as the processor. The Intel Pentium III come in speeds between 450MHz to 1.2GHz.