Sometimes even new computers ship with outdated drivers. You can try to upgrade the display driver (download the latest from ATI) and hope for the best. Check that the settings like Antialiasing and Anisotopic filtering and other 3D-related settings in the display control panel are set to "application controlled" or equivalent. Some very old ATI cards performed better if "Fast Feedback" in the SU Preferences>OpenGL settings was turned off. Just suggestions. Anssi