am about to upgrade to a 24 inch monitor for my pc (from a 17 inch) and need to know whether a phenom iix4 3.4 CPU or another 4850 1gb would be a better investment of my money (I would have to upgrade my power supply as well to accommodate the second video card) in terms of boosting my gaming fraps/experience. I have the following build: -phenom iix2 3.0ghz processor (not overclocked) -4gb of ddr3 1333 memory (I am using win xp and only get 3.25 used though) -Am running win xp sp3 -Sapphire 4850 1gb gddr3 ati Video card -Sata 7200rpm hard drive -Foxconn motherboard with two pcie 2.0 slots with am3 support -Cheap DVD/CD drive I can play most of my games (Css, Crysis Warhead, L4D, Cod5) without a hitch and like to boost out all of the settings, however GTA4 does run a little laggy at times (40 frames per second). also: -Do I even need to upgrade? -Is a 4850 my best option for a video add-on for 100-200 bucks?