I just recently got a BFG 6800GT OC and want to run it at Ultra speeds but I am kinda worried about ruining it. At stock settings my current temps are 60 idle and 68-69 under load. Do I need to improve cooling before overclocking? Or is there anything else I should know? Edit: By Improving cooling, I meant getting more case fans, or PCI exhaust fan.....etc. Not replacing the card's cooling. Also, at what temps will the card have problems?