A mixed bag in the electrical performance stakes. The DC regulation is exceptional with the 12V rail only dropping 20mV when taken from 0 to over 80 amps! Efficiency and power factor levels are very good but not quite up to the claimed 80 Plus certification following the OCC testing methodology. I will mention at this stage the claimed 80 Plus and Nvidia SLI Ready certification of which I can find no evidence, at the time of writing this review, on the 80 Plus Org or Nvidia websites.