TechPowerUp reviewed the FSP Hydro G PRO 850 W
A quote from the article:
The FSP Hydro G Pro 850 W is of terrific build quality and uses a modern platform, but something in its final recipe didn't turn out as planned. Overall performance isn't as good as with the competition, and the HG2-850 costs more than the popular Corsair RM850x or Seasonic Focus Plus Gold of similar capacity.FSP Hydro G PRO 850 W Review