The AMD Catalyst - Rage Performance Driver has apparently been updated, though Guru3D notes that they confusingly don't seem to carry a new version number. AMD tweeted about this saying they were originally packed with "very old OGL files," but they now tweet that this has been corrected, and that "If you're playing Rage, you'll see good gains on the 4000 Series as well - link will be updated with that info as well." Thanks Bill.