If you overclock memory (since they're not linked to CPU FSB speed anymore, yes there is still merit to it, but since also, we depend on XMP nowadays, and higher DDR speed often require higher or slacker timings anyway, you have to realize, what setting you choose does a two, four or eight fold effect on memory... it's not as precise as before, and can't be. )also voltages tweaking too have become less tolerable on the mem side)