2 of the cards stay in the 50s under load, and one goes into the 80s, I cranked the fans up to 85% though, and it cooled it down, really quiet though, compared to the 4870s/5870s I had before They would sound like a jet taking off. I'm fairly impressed. Sounds smoother. (think porsche vs old Camaro).
I upped the voltage to 1.138 and put the core up to 850, that bumped me up to 55K, I was hoping for a little more, but that's ok I guess. Gonna try to hit 900, but don't want to burn anything up either