Not sure if this has already been mentioned in the thread:
BITMAIN did correct the specifications on Batch 6 to say the following: "5. Chip quantity per unit: 135 x BM1385"
I still find it confusing it says:
2. Power Consumption: 1042 W + 10% (at the wall, with APW3, 93% efficiency, 25C ambient temp)
3. Power Efficiency: 0.25 J/GH + 10% (at the wall, with APW3, 93% efficiency, 25°C ambient temp)
The reason this is confusing to me is because it does not say, "+/-" but only "+"
The BM1385 chip is capable of 32.5 GHS per chip at just 0.216 Watts of power usage per GHS with 0.66V core voltage.
I'm just totally confused at the moment. Can someone chime in to help me understand if it is 1042 watts at the wall @ 600MHz or 1,146.2 watts (+10%) ??
The same instant bitmain put up b6 up, and was ignored like I usually am.
https://bitcointalksearch.org/topic/m.12893262and another post regarding efficiency 2 posts down
In a way or another this last batch isn't as efficient as all previous s7.
Up to (not saying it IS) 15% less efficient I'd say. And not a single word has been mentioned by them regarding this and they couldn't even put actual efficiency. They just put this "+" stuff to misguide people.
What do you expect? Really, Bitmain is the only manufacturer of mining equipment for the "Home" miner. They have the monopoly and can do whatever they please. Their mentality is - If you don't like their policies and practices, well, go find another manufacturer.
Till there is real competition, expect this crap.
My opinion is .... there is a lot of instability within the chip. That is why there are so many different versions, hashrates and clock speeds. So instead of just tossing the QC failed boards, they have been individually testing each hashboard to grade the board for the different batches therefore mitigating their production losses.
This board with less chips, lower hashrate, but with greater power usage, My guess would be this was the original batch 1 that just absolutely failed expectations and resulted a re-design leading to the boards that are in the B1,B2,B3 etc .... They did say they had a very limited number of them.
It would make sense considering their past behavior of recycling the QC fails.
well said, bitmain can do whatever he wants, but if any of us buy products from them will learn that you have to respect their customers, in fact I'm not buying more hardware bitcoin.
1) I do not like the policy bitmain.
2) the price is too high.
3) the material is too poor.
4) If you pay in bitcoin not least I have to pay shipping.
5) must declare a lower price to save us in duties.
6) 90-day warranty are too few
7) for international users should have a distributor for Europe to pay less tax.
there is a dealer in europe, but the price is 2 times more expensive.
9) fails when a miner shipping charges to the customer, saying state as the price $ 15, cosiloro not pay customs duties.
as for me, bitmain is only a thief, greedy for money, and has no respect for its customers.
but on what you altronte pretente by a Chinese?
How much working hours that cost, have you count it? (Personal question) 
Money is solution on lot of problems 
I work on weeks, not getting job for weekends 
