Under the Hood
Here are a few pictures showing the layout and components inside the Enermax ECO 80+ 620W power supply. The overall build quality appears to be very good as we would expect from Enermax.
The two main capacitors on the primary are made by Nippon Chemi-Con and are rated at 220uF, 400V, and 85°C. The main bridge rectifier is located to the right of the large choke coil.