Well, as I have now discovered, in static shots, you certainly do struggle to see it. So it seems that what is bugging me is the "artifacts" (for want of a better word), caused by alassing in motion. There's a particular version of Spa Francorchamps for GTR which for some reason always forces AA down to 4x, loading that after a few goes round any other circtuit is a real shock. From the top of the pitlane, near the La Source hairpin, the ludicrous cliff which is the Eau Rouge, is about a KM away, and the track deliniation line, the armco barrier and even the curbs all not only look horrific when stationary, but creep and crawl with moire-yness as soon as the car rocks or moves forward. Maybe that's part of why it's only driving games.....the level of detail (and amount of paralells therein) which needs viewing at enormous distances, relative to the few 10's of metres in most FPS games......and those that have much larger visible areas, have random, none repetive scenerey on view at that extream range of you see what I mean.
Whatever, My 8800 does the trick nicely FPS wise at 8SSAA (2x2SS+4MS), in most driving games, and any upgrade I make will be to get that to 16,24 or 32. Speaking of the combined modes, is that what CFAA does?
I'd drive me totally nuts if I bought a 4870 1GB and found anything uglier than it currently is, or found that using 16CFAA caused a slideshow.