Good read.
and an interesting conflict in the story
in that 55 watts a th vs 18 watts a th are both listed As the power used.
a board with 25 chips burning 2.5 watts = 62.5 watts does 3.425 th if 25 x .137 is correct.
62.5/3.425 = 18.24 watts a th.
now we all know fans and a controller and other shit = some power.
But I can say 3 boards = 187.5 watts
maybe a six board rig pulling 375 watts + other parts say 75 watts = a 450 watt miner that does 21 th is possible
that makes it 21 or 22 watts a th which is better than all gear other than the s19xp
And if set to be a 450 watt unit it would be a nice item.
Well if 500 watts and 20th are possible at a good price the small guy will buy it.