To say that Seasonic makes good PSUs is an understatement. I really liked their regular S12 model, and this one only improves upon it. Rubycon 400v bulk cap and Nippon Chemi-Con for the secondary side, plus one solid cap on the +12v rail (seems to be a NCC too but it's difficult to make out). That rounds up their excellent choices of capacitors. When put to the test, the S12 II actually performed better than Seasonic's own specs, which in the PSU world is almost unheard of.