Originally, the Cyrix III line was to be based on the Cyrix Jedi core but the line was reannounced featuring the WinChip4 core from Glenn Henry's team at Centaur. With the negative associativity of the Cyrix image, the company renamed its Cyrix III processor to the C3. The Cyrix III was initially a 128KB L1 design without L2 cache (Samuel core). The C3 employs 128KB L1 cache and added L2 cache in the Samuel2 core. Since then, the processor has undergone some improvements in manufacturing and now the Ezra-T core is found in the C3 1GHz. This brings compatibility with Tualatin motherboards but remains compatible with non-Tualatin motherboards as well.
FULL STORY @ ACCELENATION (http://accelenation.com/?doc=151&page=1)