I have a sapphire 5830 extreme running 875/1150 and the calalyst control panel limits are 875/1200. I know I can set up profiles in Trixx to overclock the card further, but was wondering if it is better to mod the bios to give higher limits in CCC. How would I do this? I am sure that I could get well over 900 on this card as it runs at 53C on load and 38C idle (21% fan).