Originally posted by: Foxery
The 8800 is a newer generation product than the 1950, and has a slight benefit of more RAM (384 vs 256), but as you noted, the rest of your system is likely to hold it back.
For what it's worth, the Radeon 3850/512MB and 3870s can be had for almost the same price. Similar performance range, even more RAM, and you could stick with the same brand.