EDIT: At 550/1250, I get 28.3 W at the wall and 27.3 W in AxeOS
I provide only 120V AC input to the PSU, making it even less efficient.
At 550/1250, fan fixed at 80% my LV07 hashrate is 1050GH/s, Asic temp is 55C, VR temp =51C, gui says 26.9 Watt, AC measured is 28.6 Watt
At 600/1200, fan fixed at 80% my LV07 hashrate is 1120GH/s, Asic temp is 55C, VR temp= 52C, gui says 26.9 Watt, AC measured is 28.5 Watt
Same power consumption but just over 6% more hash capacity.
Asic lottery ..
Worth checking out what each LV07's individual sweet spot is.