Hi, I just curious if Imacs overheat. How do you know when they are too hot. I'm playing Star Wars The Old Republic MMO and or dual screen photoshop. Either or seems to feel like the Imac runs hotter. I hear no fan, but just wondering? Should I be careful and concerned? Usually I don't care because my PC desktops are well ventilated or have room, but this is my precious small enclosed Imac.