Maybe you need to change your thermal paste, make sure that the heat sink is in proper contact with the gpu.
Can i do that without loosing warranty?
And, its only when its idling after some hours at night, not when i use the grafics..
Just had breakfast, turned off the screen and went to the couch, after 4 minutes, i could hear the fan(s) go nuts, and my NZXT lcd fan monitor shows 63C on the outside of the GPU, and CPUID HWMonitorPro shows 81C on the kernel.. And after i turned on the screen, 2 minutes and its down on 40C again..
Why does it goes nuts immediately after i turn off the screen, i wonder.