Tom's Hardware Guide published a review on Riotoro Enigma 850W PSU
A quote from the article:
Riotoro is a newly founded company that's currently involved in the PSU, chassis, cooling, and gaming peripheral markets. It only has two PSU lines with three total members, and today we're looking at the Enigma 850W, its flagship offering.Riotoro Enigma 850W PSU Review @ Toms Hardware