http://www.hardwareinsights.com/l9-cm-600w-review/
Quite a mediocre unit, overall. And the capacitors used on the standby supply don't inspire confidence at all; not only are they (Cheapo) Teapos, placed very close to the diode (which will dissipate 1.5W easily at the label rating), but (according to the datasheet) a 3300μF 10V 10mm Teapo SC has a ripple current rating of 1.74A. I read before (IIRC in an article on Tom's Hardware) that the RMS ripple current through the capacitor directly following the rectifier in a flyback converter can be 80-90% of the load current; on that basis, something like Nichicon HW would be more appropriate there…