Hi guys! I'm debating whether to buy a NAS or use my iMac as a server running 24/7 with an HD connected to it. I was looking for Power Consumption figures for an iMac that has its screen powered off and Idle, since it would be running this way for the majority of time. Does anyone have any figures? I have a 27 Retina with i7, internal SSD and 12GB of RAM.