This is my first computer build. It is pretty much finished, although I am still working on the cable management a bit. I haven't had a single problem yet with the setup. I've been running games like Crysis 2 and Star Citizen on max settings with good frame rates and decent GPU temps.
I've been using a Watt meter. My setup computer with screen runs around 150-200 Watts on idle, and can run up to 700 watts on max settings playing games.
Updates and more pictures to come. Feel free to ask questions or give criticisms.