When I play a graphic-intensive game like Metro Last Light on the highest graphic settings, my GPU reaches the mid to upper 80s Celsius. The CPU goes up to high 60s to low 70s. I have an i7 4770 and a R9 270x and my computer is an Alienware x51. This is what it looks like: https://www.youtube.com/watch?v=RafZCg04wV4