My Pi 2 stays comfortably cool, but it's rarely under heavy load. It serves as a Gopher file server for a bunch of old computers and occasionally a music player

My Pi 2 stays comfortably cool, but it's rarely under heavy load. It serves as a Gopher file server for a bunch of old computers and occasionally a music player, so I think the heaviest thing it does at any time is to decode mp3/ogg.