comparing 40nm to 28nm isn't a linear comparison like you did. its two dimensional, thus maybe you could fit four times (or at least more than two times since 40 isn't a doubling of 28) as many transistors in a similar die area.
I think you need to read more carefully. 40 is about 1.5 times 28, and (40/28)
2 is actually almost exactly 2. So, no you can't fit more then 2.0409x the number of transistors moving from a 40nm to 28nm design.
Also, the
gate length of a transistor actually does scale linearly, so the power and gate delay do scale linearly.
With that caveat, a die shrink from 55nm to 28m means 4x the transistor density (552/282 = 4.0). Lets be generous and say 50% higher clocks are possible
Hmm, for some reason I was thinking it was 40nm, not 55. Heh. That actually makes the comparison even better in bitfury's favor.
Also you're ignoring the transistor gate length, which gives you another performance doubling from 55 to 28nm.
You can't get a pcb (no case, fans, cooling, heatsinks, power, host, etc) for the prices you claim even with free ASICs. Just once again to illustrate how silly $50 per TH/s is. You say Bitfury is the answer to lower cost, at $50 per TH/s that is $2 per board for the overclocked version with higher output power regulators. All PCB production cost, all components, ASICs, assembly, testing, yield losses, etc. $2 per board. $2 a board for a 5" by 6" PCB with over 100 components. I mean it is hard to point that out with a straight face. Even if your board was $2 power, cooling, open racks, etc have a non-zero cost.
Puppet is a textbook case of the Dunning-Kruger effect.
The only way difficulty can continue to go up exponentially is if the price does as well. There is no way anyone can afford to keep paying exponential amounts to fabs, PCB printers, Surface mounting, power companies and so on. It's completely absurd. Look at KnC using the entire world supply of their VRMs.
On the other hand, with the recent price increase plans that weren't viable are viable now. People who bought KnCs were able to the number of miners with the bitcoins they'd mined, even though they weren't close to full ROI in bitcoin, just USD.
If bitcoin hits 1k or higher there will be a lot more investment in mining.
But, if it drops back down to $100, $200 - it's going to have to level off. People simply won't be able to afford to produce more, and once we see 16/14nm designs we won't be able to get more hashrate due to moore's law til 2016/17
I have no reason to bash HashFast because, unlike every other ASIC company, they are serious about building the best mining hardware on the planet.
How much are you getting paid by HashFast's competition go troll their threads with your silly, increasingly moronic and desperate FUD?
They're also serious about keeping all those profits for themselves. Their customers sure as hell aren't going to get it. How exactly do you promise to ship in October, but don't get your wafers until the middle of November, again? When did BFL get their wafers? Wasn't it back in February or something?
Not only miners, but I bet angel investors are pissed too that they didn't just buy btc directly.
Nah, they will be just fine.
They'll be fine, but they could've made 3x their money already assuming they handed Barber over the capital when btc was around $100.
Are you kidding? They've
already made 3x their investment. Probably more.
When will we get out Baby Jets?
December 30th.
Unless bitcoin is $1k in which case they'll just refund your USD purchase price and then go buy an island.
Technically the USD/BTC exchange rate will have no effect on whether or not you will see your BTC again.
Difficulty will grow more quickly if the price is higher, as miners will have more USD equivalent to pay for hardware.
