Nope the BIOS lists the AGP/PCI speeds under your FSB speed, at 166 it goes back to 66/33 but at 200+ it doesnt, it just keeps going up. Not to say you cant run that high.... Mine will hit 215, but my memory is only stable at Cas 2.5 up to 204ish. (Pretty damn good for Crucial PC2100 thats a year old)