I will try it once I get mine in about a week, but don't you (Mthos) thinks it makes more sense to up the textures while leaving most other stuff at medium (talking about Starcraft 2 on OSX). With 2GB VRAM, I am guessing increasing textures comes for free (or something like a 5% performance hit) and if you play at 1920x1200 medium textures seems a bit low.