Version 2 efficiency looks insane. I consider getting a miner-only unit to test & review, however much I like my R909.
That one just gets about 50W/TH compared to Apollo 2's 30-35W/TH. Although it's nice to have something that pulls <100W at the wall and is basically silent. More on this soon..

It's definitely a big improvement from Version 1's 62.5W/TH in ECO mode and 66.66W/TH in Turbo mode!