EP-4DBA DDR:FSB ratio?

HFC

Senior member
Apr 8, 2001
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There are three choices in the BIOS, Auto, PC2100, and PC1600. Anybody knows whether PC2100 and PC1600 are fixed 133 and 100 or are they really 4:3 and 1:1 of the FSB? And what would that be if the FSB is above 133?