I'm currently operating our lyra2z design with 75W power consumption for 40Mh/s at 0.785v and No bad shares. It looks like we should be able to push this up to 70-80Mh/s (But will require a fair bit of work on our end, timeline unknown). In addition, I've noticed that a 7-8c decrease in inductor temperature (at 60-90c temperature ranges) translates to roughly a 5% decrease in power consumption. The colder the fpga and surrounding components are the less power they use and the harder you can push them. Novec, chilled water loops, and other exotic cooling are becoming more interesting by the day.