Okay 155 gh x .27 = 42 watts once you figure psu in 47 watts .
lets say 5x =
775gh at 235 watts on the low clock.
1365gh at 576 watts on the high clock .
this is a 120 chip design.
right now I can buy the sp20 for under 400 usd.
It will do 970gh at 450 watts
the s-5 will do 1300gh on overclock at 676 watts cost shipped right now is 342 usd if you have a coupon.
For a 120 chip AM to be worth buying it needs to come out soon and be cheap.
At least the board did decently (not .2 watts) more like .3 or .33 watts.
The sp20 can do .46 via underclock.
Price of 120 chip design should be in principle at 230-250 usd w/o the PSU.
If the mid-term future Bitcoin price allows significant quantity, the end-game price can be below 200 usd.