Please correct me, if I'm wrong.
Let's assume they
1) produce a 28nm miner for $0.06/GH
2) operate it at 0.36 J/GH (conservativ guess)
3) while having electricity costs of $0.05/kWh (or less)
they should make $0.03/GH per month at the current difficulty, which means ROI in about 2 months.
There will be probably first miners based on Bitfury's 16nm ASIC in wild and their DC end of March, but I guess the real volume ramp up will happen in April.
So it should be enough time, to make some profit with the new 28nm hardware.
Let's assume they
1) produce a 28nm miner for $0.06/GH
2) operate it at 0.36 J/GH (conservativ guess)
3) while having electricity costs of $0.05/kWh (or less)
they should make $0.03/GH per month at the current difficulty, which means ROI in about 2 months.
There will be probably first miners based on Bitfury's 16nm ASIC in wild and their DC end of March, but I guess the real volume ramp up will happen in April.
So it should be enough time, to make some profit with the new 28nm hardware.
I don't see how it would be possible to produce full working miners meaning PCB+chips+components at $0.06/GH. Even if this were true, which I find very unlikely, the big private buyers are being ripped off big time while we are being lied that BitFury is trying to help the decentralization.
Sorry, but I think this is the sad truth.
Bronto estimated earlier the pure costs of their packaged and tested 16nm ASIC are about $0.03/GH (at 100 GH/chip) and I bet the costs of their 28nm generation ASIC are not much higher, $0.05/GH should be a good guess.
This means, if they produce a 10 TH/s miner they spend $500 for ASICs and would have $100 left for the PCB and remaining components to end up at $0.06/GH.
It's a string design probably with a 2 layer PCB! You even don't have to negogiate hard with the suppliers to stay below $100.
I have to admit, I ignored the PSU. Including that their production costs should be more in the range of $0.08/GH.