Let's get down to the results! Does a low cost PC equipped with an 8800 GTX stand a chance when pitted against a strong, balanced midrange system with an 8800 GTS? Will the low-cost PC's meager 1GB of RAM and slower CPU prevent it from keeping pace with the midrange system? Let's see:
In 1600x1200 with 4xAA, our Budget Gamer's Special is trumping the mid-range system.
This is a highly specialized case - I don't think I'd ever recommend such an unbalanced system to anyone - but it makes a point that can't be ignored: for high resolution gaming, even the 8800 GTX is a viable card for a low-end dual core system.