Ok. So ~4600ppd is stock, which is about right. Now for the shaders: d/l Rivatuner, get used to the layout and read this thread: Vaguetech - Rivatuner v2.07-10 Guide. Best one out there. The Creating Overclocking Profiles section will show how to oc the card. For the shaders, simply un-tick Link Clocks and only oc the shaders.