Re: My RX580 Benchmarking and Results: 30.5Mh/s @ 77.5W (+ 1130MH/s Dcr w/ 125W)

This only has the PCI-E connections, you would still need a PSU, that can power the risers aswell

There's PCI-E powered risers, but yes you'd still need a low wattage normal PSU with it, overall cost is down, and efficiency is up.