The famous type of processor available and one that is manufactured by Intel. The Pentium processor was first released at a similar time as Windows 95 and this partnership has become the mainstay in the majority of computers made by Hewlett Packard, Gateway and Compaq. The first Pentium processors ran at speeds such as 75 mhz, but recent releases such as the Pentium 4 processors are now running at 3000 mhz.