Default is 398.3 core and 324.0 memory. What is a reasonable expectation for this? Do I need to up the voltage to do much? I ran one 3DMark2003 just to get a baseline. Not too good I think. I have Rage3D Tweak 3.9 installed. Oddly enough, there are no entries under the Rage3D Tweak tab. The core/memory speeds show up under the Overclocker tab though. Oh well, I never OCd a video card before so something new to learn.