I just upgraded from 2 Sapphire HD 5850s to a VisionTek 6970. With my Sapphire cards I ran Sapphire Trixx to overclock and it worked awesome. What overclocking utility can I use on my VisionTek? I have creeped around the internet for info, but this card doesn't seem to be to popular among the overclocking community. Any help would be greatly appreciated.