Apologies for not being clear. The board that I'm gonna put that phenom2 x4 into supports up to ddr2-1066 with a am3/am2+ chip and i want to turn it into a secondary gaming box so anyone who stops by can play stuff on it. Soooooo I want to get either 4 or 8gb for it. Pretty sure 4 would be plenty, but just throwing that out there.