So I just upgraded from a 13" Late 2011 "Classic" MacBook Pro (whose fans were always spinning at any given moment) to this beautiful Early 2015 13" rMBP. Now of course there are huge differences (SSD vs. HDD, thinner, Retina screen, etc.) but the biggest and honestly most significant difference I've noticed is this: I've not heard the fan(s) on this computer. Once. Under any circumstance. On my old computer I was hearing my fans if I watched Netflix or Hulu! I was recently playing an online MMO game that would send my old computer into turbo mode and drain the battery like clockwork, and the fans didn't kick on once and the battery barely increased in draining! So I have a question for all of you out there - how often do you hear your 13's fan kick in? Can I expect this machine to be virtually silent 99% of the time? If so I am completely amazed. The only sound this computer makes from this point is the typing of the keys (as even the Force Trackpad is incredibly silent).