XFX Pro Series 850W Black Edition PSU Review

Testing results (Regulation & Ripple)

The electrical performance of the XFX Pro Series 850W Black Edition is by all means excellent. Voltage regulation is very good, at about 1.5% for all three voltage lines between the minimum and maximum load range. Ripple filtering is excellent as well, with our system recording a maximum ripple of only 30mV on the 12V line under maximum load, a mere quarter of the 120mV design limit.