What? I'm writing this on a late 2008 MacBook Pro(yes, one with a 2.4GHz Core2Duo and 4GB of ram!), running latest Chrome and the fan might as well be off - if it's running, I genuinely can't hear it. I also have a 2012 MacBook Air, and the only time when I could hear the fan on that was when I foolishly tried playing Guild Wars 2.