My computer is a 2009 Imac 27 inch. I have a gaming pc which has a 6950 2gb connected to the display port on the Imac. When I play games using the imac as a monitor, the upper left side of the Imac (backside when looking at the screen) gets pretty hot. Is this normal behavior when using the imac as a monitor for another pc? I thought that since I wasn't using the Imac GPU to process my games, it should not be getting any hotter than normal.