I read this entire thread and wonder, why bother???
You have a dual core at 3.2GHz...there is room for more (My E6750 does 3.6GHz easily) and you also have a 4850x2...do you need
any more fps?
Remember, the minimum fps is what matters, not the maximum, and I'm sure your current setup is fine at what it does.
Seems like a waste of money to be honest for minimal performance increases. This is, as always, just my personal view.