TechPowerUp takes a look at the Channel Well Technology CSX 850M-G
A quote from the article:
The first ATX 3.0 compatible SFX power supply falls into our hands, and we don't miss the opportunity to evaluate it thoroughly. The Channel Well Technology CSX 850M-G offers high performance, coming with a single 12+4 pin PCIe connector.Channel Well Technology CSX 850M-G Review