I have an XFX 8800 Ultra XXX. It's specified speeds are GPU 675, Shaders 1675, Mem 1150. GPU-Z says it is 685/1692/1150, RivaTuner says its 684/1674/1152. Which one is right? I've never edited the bios and the card is currently at stock (xxx though). I bought the card second hand over a year ago, is it possible the bios was edited? GPU-Z States the bios version is 60.80.18.00.1E and this "seems" to be official. The card is running too hot at the moment because it's summer here. What would be the eaiest way to try downclocking the card? I've ordered a HR-03 that should help a lot but was wondering if I can temprarily slow it down a little. BTW, I'm using using Vista 64.