I have an Asus GTX 590. The card idles at 80 degrees. I'm getting 100 celsius playing Crysis 3 on high settings. Same goes for Battlefield 3 on Ultra. I cleaned the GPU fan and nothing changed My case has a pretty good airflow. I just have no idea why the card is running really hot. I get pretty good frames in first 2-3 minutes of games but later fps drops to 20-30 average.