Intel released a pair of Celeron chips on Wednesday that are similar on the surface but different underneath.
The new 1.7GHz Celeron, as expected, is based around the same architecture behind the Pentium 4, while the 1.4GHz Celeron is based around the same architecture as the Pentium III, a company representative has confirmed.
While the chips will be marketed as part of the same family, they are quite different when it comes to internal computer architecture. The 1.7GHz comes with a 400MHz bus, the main data conduit between the processor and main memory, while the 1.4GHz comes with a 100MHz bus. Faster buses generally mean greater performance. On the other hand, the 1.7GHz comes with a 128KB secondary cache, a small memory reservoir near the processor for rapid data access, while the 1.4GHz version comes with a 256KB cache. The 1.7GHz chip is also made on the 180-nanometer manufacturing process like the first Pentium 4 chips, while the 1.4GHz comes off the newer 130-nanometer manufacturing lines.
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