The production units that we have assembled and tested so far are running at between 1.63TH/s and 1.72TH/s with power draw at the wall between 1900W and 2100W typically 20% higher than our anticipated target of 1650W
20%??? What happened to:
The chip will consume less than 300w, for a performance of 504 Gh/s.
Sounds like you missed the power target by quite a bit more than 20%.