I'm by far no professional in this topic considering that im working on my first build myself, but i have learned a whole lot in the last few weeks aside from what ive already known. While stress testing your cpu generally tends to get hotter than if it were just under load during a game (in most cases). I know that this is intel we are talking about but ive heard rumors of people stress testing AMD products such as the 8350 and so on while getting temps of 70c and being okay. I guess if you have sufficient cooling i wouldnt worry about it to much, i would pay more attention to your core temps while under load during a game and see if your temps get that high, and if not then i would say your probably good.