not sure if that mobo will do the 800fsb . as far as the memory it won't make any real difference the 533 fsb is 133 x 4 =533 well 532 to be exact . and pc2100 = 133fsb .
if you run the memory at 166 , pc2700 , it will be outta sinc with the fsb and might run slower , well i see you already figured that out . so i gues si will shut up now hahahah
ohh an hi there unkie bob ain't heard from ya in a while thought ya fell in