Have a msi GX740 which has a Radeon HD5870 GPU. The idle temperature is 68-70 and the temperature under load is low 80 to 90 degree celcius. My cpu is quite cool. 50-55 idle, 60+ on load. Cleaned out dust, cpu's temperature became 45-50 idle, 50-65 on load. Sometimes it hits 70 but not often. But GPU temperature remains the same. As I am typing this right now, I have google chrome, Starcraft 2(not playing, in menu),7zip extracting a big file. My CPU temperature is 47 degrees(both cores) and my GPU is 69. Is 69 idle normal for this card? Honestly I'm not too afraid when it's at 70 but when it reaches 90 i freak out, close as many programs as I can and turn on the air conditioner...