What do the rivatuner temps stand for?

I'm having troubles with the temperatures in my computer. The only problem is, rivatuner shows three temps besides the GPU and the core. Temp 1 is running at 26C, Temp 2 is running 29C, and then all of a sudden Temp 3 is 105C; what's up with that? All of the fans in my computer are running, the GPU is idle at 42, and the core is only 25C. Why is it that Temp 3 is marked as so high? I don't know of anything else that needs cooling.

It means there is no 3rd sensor, just giving you a random read. if something was 105c on your computer, you'd smell it by nowFrenzyd109

I would have to agree, 105c is really hot, something would of started cooking, not to mention the room temperature would have rose significantly if this really were the case.