Well I just ordered myself a 2.8C/Asus P4P800/2x256MB PC3500 Corsair Cas2/Swiftech MCX4000. All in all, not a bad setup however Im wondering how high have others taken their 2.8C's on air, is 3.5GHz a good goal? Also would it be wise to probaly put a nice 80MM Tornado on the MCX instead of their 70MM 30CFM YS tech fan?