Hey mate, if you're going to het a 8800, don't stop at the GT. I have a 8800 GTS (640 MB), which they don't make anymore believing that 320 MB was all that was needed. Well, with the latest games it IS needed. The clock speed of a GTS is way above the GT but still noticeably below the GTX and Ultra (hence the need for the 640 MB). Forget the 7 series, they're old hat. Wowerine is right...they don't support Shader Model 3.0 which is a must-have now. Remember you will also quite likely need a new PSU (550 Dual Channel is minimum) and extra cooling if your MoBo has a large Heat Sink like the Gigabyte one does. The 9 series will be coming out shortly, but it will be expensive for a while. The 8800's are a good card, they just run hot unless you get one with its' own cooling system, and draw a lot of power. These need to be considered also. Latest games are also very CPU-intensive as well, so you need a Dual Core chip to get the most out of your system. Just a GPU upgrade isn't enough nowadays. Cheers and good luck.