I got my nVidia GeForce 7950 GT installed in my Dell Dimension 9200 (Intel E6420 processor).
I turned on 8xS antialiasing and highest quality video settings in the nVidia control panel. In Aces High, I set highest object detail and farthest ground detail. I'm running at 1280x960 resolution.
With that, I'm getting 50 fps in the ndisles map offline, launched NW, sitting on the runway in a P-51D (with the ack shooting at the orbiting enemy planes), looking straight ahead.