Hey, I've gone through the forum and checked the other threads which are related but I still am not sure. I currently have: -Thermaltake 430 (TR2-430NP) -2 160 GB SATA Drives -1 DVD-RW Drive -Intel Pentium D 3.2 Ghz -ATI Radeon HD 2400 -2 1 GB Kingston DDR2 RAM sticks -Gigabyte 945GMC-S2C -And 4 Case Fans I wanted to switch my Intel Pentium D with an Intel E6600 or an E6700 (haven't decided yet) and I would like to switch my video card for a BFG 9600 GT OC2 (http://www.newegg.com/Product/Product.aspx?Item=N82E16814143126) I am pretty sure that just changing the processor wont hurt my system but if I put in this video card will my system become unstable? I am do not over clock but I like gaming. If you believe this video card with not work with my system do you have any other suggestions? My budget is around US$100-200 but I would like to stay around US$150. Games I play: -CS:S -NFS: Pro Street -Race Driver: Grid -Assassins Creed -Silent Hunter IV Thanks *Please note that I am only going to use this machine for about a year, then I plan on building another.