I normally run the stock setup error free at 167MHz - 171MHz, with memory at 1:1,
and even when using SPD (mem at 3/4), stock hsf handles 192MHz error free here.
So don't think an "upgrade" is needed. Stock seems to handle all this mb can put out.
As dude says, a little compound won't hurt.
Have seen some reports of users getting over 200MHz fsb (400DDR), so perhaps a little AS was needed???