Re: Wifes PC needs an upgrade, I'm debating...
I got my card a week ago and did not see much fps gain from my 8800gt (same resolution as you). So I'm thinking my cpu is a bit of a bottleneck here.
However with FSAA that's when I saw the big difference, before I could play most games just fine on max settings @ 1680x1050 but usually with no AA, now AA is no problem at all.
I also OCed the cpu a bit more from 3.2 to 3.36 (can't seem to go higher then that, I think my ram is crapping out). That also helped up the fps a bit.
For reference, I get ~11600 Vantage points with the evga 260 216c SC and the core duo @ 3.36Ghz