You can't really do any of that on regular cooling.
Most SB/IB hit 4.5ghz easily, then again anything above 4.5ghz would be a bit pointless.
So it sounds like it doesn't really matter what processor I go with than. Since I don't use any programs that use more than 4 threads I think I may go with an Ivy i5.
Does the i7 have any benefits other than hyper-threading?