If you're in the market for an OEM PC for something on-the-cheap for a relative or whatever, & don't have a clue (like me) which Celeron is which, the HardwareSecrets gang is here to help. They've got all the Celerons; even back to the Slot 1 variety.

"Because of these differences Celeron is cheaper and of low-performance, compared to the Pentium II, Pentium III and Pentium 4 processors, thus it fits well to domestic users market or to those who don’t need great power in the computer."