I was curious if any of you run a 2013 Air in clamshell mode and have any issues with fan noise? I'm considering picking one of these up (possibly even to replace my Mac Mini), but I'm concerned about potential fan noise in clamshell mode. I had tried once before using a 2011 MBA and 2011 MBP in clamshell mode and the fan noise when watching anything on Youtube or doing other processor-intensive tasks made the fans kick up quite a bit. As a result, I never ended up using either one as a desktop replacement (connected to an external display). I have a 2012 Mac Mini that doesn't make any noise at all, but if I can get a more powerful machine that is also portable to do both functions, that might be a good option.