Just as the Pentium III was a Pentium II with SSE and a few added features, the Celeron II is simply a Celeron with a SSE, SSE2, and a few added features. The chip is available from 533 MHz to 1.1 GHz. This chip was basically an enhancement of the original Celeron, and it was released in response to AMD's coming competition in the low-cost market with the Duron. The PSN of the Pentium III had been disabled in the Celeron II, with Intel stating that the feature was not necessary in the entry-level consumer market. Due to some inefficiencies in the L2 cache and still using the 66MHz bus (unless you overclock), this chip would not hold up too well against the Duron despite being based on the trusted Coppermine core. Celeron II would not be released with true 100MHz bus support until the 800MHz edition, which was put out at the beginning of 2001.
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