alright, first of all are Infineon and Kingston RAM cards compatible? I have a 2.6GHz Celeron processor with 512mb of RAM, and have an ATI Radeon 9250 PCI graphics card. I was wondering if i added another 512mb ram card, if that would help make the gameplay in my games smoother, for games like Doom 3, Halo-when theres lots of enemies, and Star Wars:Knights of the old Republic? Mainly star wars because before and after i got my new graphics card, the gameplay didn't change one bit. Any info is much appreciated, i've tried searching online but ive had no luck, plz help me