Ive been looking at the 9800 GT for a while. Tho the HD 5670 seams to be as good as you say. But its a 128 bit memory interface right? So that would put it a bit behind wouldn't it?
And one more question. Why does ATi have a lot more Stream processing units than Nvidia? Or for their architecture is it measured different?
Oh yea, and i also am playing some games like COD4 in 3D.(red and crayon) Does ATi have 3D capability?
Comparing the architecture between ATI and Nvidia cards is useless, different tech. Either card is a good choice for your resolution but the 9800GT has the power edge. Your resolution of 1440 x900 is close to the same amount of total pixels as the 1280 x1024 as shown in the benchmark above so you can us it as a reference of what to expect.