evilneko said:
I'd go for AA too, and/or Anisotropic Filtering. Sometimes I can't even tell the difference anyway.
Although I've never had to do it just to adjust settings enough to play, I think it'd be a good idea to hit up tweakguides.com to see what he says about a game's graphics settings, and see comparison screenshots. That way, one could make an informed choice about what to sacrifice.
First AA, then Shadow quality/resolution, if I get stuttering I drop draw distance and texture resolution as little as possible until I get no more stuttering, a hiccup-less experience is far more important to me than a choppy framerate (I can tolerate 25 FPS) or a low draw distance, as long as it's not too low.
So far that's all that's been necessary to get new games running fine on my aging PC.
I never, ever, for absolutely no reason at all will drop Anisotropic Filtering, the performance hit is negligible (my old PC's Geforce FX5200 could handle 8xAF on most games, and that is a freaking FX5200) and the drop in visual quality is horrendous, and I don't drop resolution either because I use a LCD screen connected via VGA, the LCD screen automatically upscales to fit the screen keeping the aspect ratio, it makes things look blurry and since I don't have a DVI cable I can't just create a custom resolution that keeps a 1:1 relation between rendered and displayed pixels.