Celeron and Xeon Processors
Celeron processors were introduced by Intel as a low-cost CPU alternative for the Pentium processors. They were basically Pentium II processors without any L2 cache at all. However, this reduced the performance of Celeron processors as compared with AMD and Cyrix chips. Hence, subsequent Celeron versions (300A and up) were provided with 128 kB of L2 cache. It was about one-fourth the size of the Pentium cache but operated at the full speed of the respective CPU, rather than at half-speed as in the Pentium processors. Later Celeron versions were based on the Pentium III, Pentium IV and Pentium M processors. These processors are suitable for most applications, but their performance is somewhat limited when it comes to running intense applications.
Xeon are high-end processors having a full-speed L2 cache of the same size as the Pentium cache. These processors are used for high-performance servers and workstations.