Hi all, I am looking at a couple of new systems . The choice ( due to budget ) I have is x4 955 with ddr2 (800mhz) value range (M/board - Gigabyte GA-M770-UD3) or x2 550 with ddr3 (1333mhz) corsair brand (M/board - Msi 770 c45). The rest of the components will be the same. Use is mainly for gaming ( WOW & TF2 ) and general surfing. I will not be OC at this stage. I was wondering which combo would yield the best performance?