My friend was asking which one of the 2 9600GSO's is better. He's choosing between the 512MB (48 core @650, 256-bit memory @1.4 GHz) and 384MB (96 core @550, 192-bit memory @1.6 GHz). Told him to get the 9600GT instead but he says that he'd be getting the GSO cheap ($40) because it's on sale in some shop. What do you think I should tell him?