*sigh* I've already had to RMA my video card twice, and it looks like I'll need to have it replaced again.

Even if the side panel of my case is removed and the video card fan speed is manually raised to 100%, my video card's temperature is reaching 80 degrees celsius in just a few minutes when playing games. Until recently, temperatures normally stayed at about 70 degrees. Currently, the idle temperature hovers around 53 degrees celsius, but it skyrockets to 70 degrees celsius in seconds after starting furmark or a game. I really don't know what has changed. I tried cleaning some of the dust that had accumulated on the fan, but that doesn't seem to have helped.
Oddly though, it seems that the DispIO sensor is reading roughly 15 degrees lower than the rest of the sensors. I've considered that maybe the sensors are malfunctioning, but I've already had a game exhibit weird artifacts like a texture stretching across the screen, then crash due to heat. What could have gone wrong?