I didnt read all of the posts so if it was said I am a dee-tee-dee but how video cards numbers work are. First number in this case 8 equals what series. The next number is the quality of the card from 1-9 The next 2 numbers are the modification numbers of that card. so 7950 > 8600. The 7950 is just a tad faster than some of the 8800s if I remember right. However the 8s do have advantages over the 7s especially if you are running Vista and want to take advantage of the DirectX10 graphics accelerator.

I went with the 8800gt and I like it. It it wasnt as cheap and on a single card slot I would have stuck with my 7950