Originally Posted by kriko
UPDATE: I tried with 177.xx beta driver and performance on 7600gt under KDE4 has noticeably improved. 2d seems to be a lot faster than current stable driver, 3d effects performs better, though some animations are not as smooth as they should be (and sometimes window content might appear after several seconds with IPP=2 - but this was improved too).
When using 3d effects in KDE4 is it ok to enable direct rendering?
I agree, there is a huge performance increase.