Pentium II ( Intel Pentium Series)

Pentium II:

The Pentium –11 was introduced in 1997 and incorporates Intel MMX Technology designed specifically to process video, audio, and graphics data efficiently.
The MMX Technology improves video compression/decompression, image manipulation, encryption, and I/O processing. The Pentium 11 has 57 new instruction designed to speed the repetitive sequence often found in multimedia operation.
Additional members of the Pentium -11 family were introduced in 1988, including the celeron processor, designed for basic PC market by 199, the clock speed of the Pentium –11 was up to 450 MHZ, and the clock speed of the Celeron processor was up to 400 MHZ.

The Pentium (intel Pentium Series)

The Pentium:

The Pentium, introduced in 1993, retains the 32-bit address bus of the 80486 but doubles the data bus 64 bits. The Pentium retained the 32 bit registers of the 486 but made it possible to deal with the 64 bit data bus by adding a second execution unit. The Pentium also has two 8-K bytes cache memories, one for instructions and for data. The original Pentium operated at a clock frequency of 60 MHZ or 233 MHZ.