I have an xfx radeon 7870, and I am using it to play a heavily modded skyrim with ENB, etc. The temperature of my GPU will start at an idle temperature of ~35 celsius and constantly increase up to 100 degrees, at which point I close the game for fear of damaging the card, I am almost certain it would continue to increase otherwise. The computer is fairly well ventilated from what I can tell, as the other components are running at low temps (I5-4690 running at ~45 on all cores). I just dusted it this morning. I have turned the fan speed up to 100%, reduced the power (which dropped frame rates but did not help the temperature) and reduced the clock speed from standard 1000 mhz to 950 mhz. What else can I do?