I am torn between what to buy to upgrade my system. I dont overclock at all and just use my system mostly for WOW and photoediting. What should i get ? I more inclined forward the 4000+ since i dont overclock and the 4200+ just cost too much. what do you guys think ? Also, i am gonna get the epox nf4 ultra with it and since this is the first time i get a X2, do i need a updated bios or any special driver for it ?