I have a Dell 1710XPS notebook that's about four years old that's designed for high performance gaming and it uses one of Nvidia’s graphics chips.
That notebook has had to be repaired twice because the graphics processor overheats.To this day it still does.
That is likely a harbinger of the problem nvidia had with their chips....
Somewhere I have read some of the gorry details on the trouble details....might have been on Anandtech.