Well my dad has Sapphire 9700 pro he pushed the core up to 400mhz, with Water-cooling, but i beat him by 10mhz with my Built By ATI 9700pro with Zalman passive heatsink. As for the ram, I used copper ramsinks so I beat my dad's 355(he used thermaltake aluminum ramsinks), when i managed to push to 360 without artifacts.
I hate Computers! I could only overclock my Barton 2500+ to 2580mhz(vcore 1.65). My Radeon 9700pro core/mem speed won't go above 410/720. I really hate computers!