Performance-wise, this is not a bad entry-level 600 W unit, with
voltages inside the allowed range all times and noise and ripple levels
always below their maximum allowed values. We saw efficiency peaking
85%, which is not bad at all for a low-cost power supply, but at full load efficiency dropped to 77.6%. One funny thing
is that at the manufacturer’s website they say the maximum efficiency is
of 80% or 82%, depending on the part of the text you are reading. @ Hardware Secrets