The best a s7 with lots of mods was around 0.22 or 220 watts a th

The s9j can do about 88 watts a th

On a chip rated about 0.068 watt a th.

Bitfury 100 watt a th  gear

Can go as low as .06 watts a  th.

So a .042 watt chip

Is going to be more like 55 watts maybe 60 watts a th.

I just wish two things a manual speed not auto tune.

As I prefer slight underclock.

And if it goes on sale on nov 8 I hope it ships quickly.

If it is 1200 I am looking at 1600 after shipping and tax.

Not sure it is worth 1600 unless it comes really fast and does 55 watts not 65 watts