I am about to get a retail A64 3200+ (754-pin) and a DFI LANPARTY UT nF3 250Gb motherboard. I know, 939-pin is better, but I just can't afford it. Anyway, with two sticks of PC3200 Hyper-X memory, what type of overclock ability does this combo have? I presume I will need to replace the stock HSF?