Ok guys I need some help. Ive got a dell inspiron 530. 2G of ram Vista 32 bit. I have only one PCI express slot. Just bought a Rosewill 500 Watt psu. First question is when looking at graphic cards does it matter if it runs 32 stream processors or 64. since mine is 32 bit. secondly I had bought a radeon 3870 graphics card and it ened up being a dud and had to send it back now im looking for another graphics card but i am stumped. I want a card that can run games as low as Team Fortress 2 to something like cod4 or bioshock or even crysis. doesnt have to be on high settings but good enough to run it. somewhere in the 75-100 dollar range. can ne one give me some good card options.