how efficient is AM's chips compare to competitors? seem a lot of grumbling about the efficiency.
the already produced equipment is sunk cost. efficiency ensure positive cash flow (BTC in USD minus electricity price) - esp with BTC down quite a bit from the 650 level.
Not very efficient at all... 800GH tubes using 930 watts. Bitmain and SP-Tech use well under 1 watt per GH.
Very true, their hardware (both 28nm, I believe?) are more efficient than AM's current offerings; there's no doubt about that. However, the S3 isn't available for shipping until
Sept 20th and SP30/31 are in September "Batch 2." AM hardware can be obtained within a week and will have roughly a 2-3 week head start.
Well last I checked the group buy did not sell very many...and most people have issues. As of right now you can only use them on 1 or 2 pools...
Also you can't keep ants or SP in stock for a reason.