not too familiar with conroes, though just from reading...
leave ram set at 533 and see how high you can push up the fsb with it set there.
on my mobo there is no way to set ram divider either...i think somehow it is set when i manually change the speed of my ram (800 to 667 mhz for example).
also, dumb question maybe, but did you adjust the voltage at all on the cpu and ram?
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