Hello, I want to overclock my 6800 gs 256 mb ddr3 graphics card. Im wondering if it will void my 30 day warranty? Not that it matters since I can't even activate it or talk to PNY for help because PNY support is so bad. I heard rivatuner is easy to use and you can simply unlock pipes on your card by checking boxes. If I do overclock is rivatuner I good program to use? What do you recommend? I just want a slight increase in performance how far should I go in unlocking? And lastly is it overclocking really noticable even at lower levels and Should I over clock my memory or processor to match my oc'd video card?