Hi guys. I currently have 2 Radeon HD 5770's Crossfired, and when I run them with battlefield 3, the temperatures reach up to 70 Degrees Celcius. Is this normal? My Graphic cards have some clearance space next to each other. Also, each GPU isn't running at 99% - they're both running at about 50-60%.
I had the same problem in my graphics cards they're the same as yours, after taking them apart I realized there was a layer of thick dust build up around the fins of the heatsink causing massive block of airflow thus heating them, both cards get the problem every year as I live in a dusty house.. Simple solution is to run compressed air through the exhaust of the cards in the back of your computer, do this really good every few months you'll never have a problem.