Bitcoin Forum

wow look at the stats of this beast! How long to roi do you think?

https://bitmaintech.com/productDetail.htm?pid=00020150827084021471OHYdwd9D06A0

There's a whole existing thread that includes some ROI calculations: https://bitcointalk.org/index.php?topic=1165628.msg12277462#msg12277462
Caveat to those calculations: Assumes fixed difficulty and exchange rates (for electricity costs) and for longer ROI periods does not take the reward halving into account.

yeah it is about 250 days to roi at 10 cents a kwatt.  make it a bit worse due to diff increases  and say 300 days.  so if you have 10 cent power breakeven on

July 1 2016

just as we halve

well if the price of btc goes up it'll reduce the amount it takes to roi

Bitmain are blowing away any competition with this one. Other mining producers will have to try real hard to produce a machine more efficient than this one. I expect that the difficulty will start rising at high rates again but that would also depend on how much production they're going to put out. Most certainly though, this guy is going to be a best seller.

despite the nice efficienty, which is 4:2 vs the antminer s5 it seems that the cost is too high at the moment, probably because btc is down, this mean a 5-6 months roi

the same as it was before with the s5...

mmh if they can double again the efficiency, and propose a miner less powerful, something like 3 tera with 300w, i would jump in

I think being the only one allowed them to go at a high cost. In perfect world we have 1 or 2 other companies to help drive price down. 

What will be interesting is once another company has chips.   Do they both battle on price?  I hope so but am not sure of anything at this point.

Im very interested in one. :)

I assume that the introduction price is a bit inflated to help fuel more production. Do you guys think that later batched will have a significantly lower price that the one we see now? Surely Bitmain would try to stay up to date with profitability, which makes me believe that upcoming batches could offer a price better in therms of profitability when compared to the one of the first one.

You are better off accumulating bitcoin at this low price and buying equipment on top of the next eventual crazy price bubble. Too many unknowns for a small miner starting out makes it risky.

There be something better coming out in 6 months time for sure.

Agreed, S7 price is too high; surely it will come down soon

Based on recent diff increases, and current price of Bitcoin, the S7 will NEVER RoI at 6.7 Cents/KWH.
Even a 3% average diff increase kills it's chance to EVER RoI, it remains profitable after the halfing by a few $ a MONTH but it's still a few HUNDRED underwater in July 2016.

 It might RoI at 5 cent / KWH or less, but even then it'll probably need a bitcoin price jump or a serious DROP in the rate of diff increase to do so.

 IMO wait, unless you have VERY cheap or free electric - and hope competition from Lketc (and possibly others) gets the price to drop a lot.


 Significantly better in 6 months is VERY iffy, unless you're a MBP scale LARGE industrial company of the size that Bitfury will deal with.

OPEC like mining equipment maker alliance, they decide bitcoin's lowest production cost ;D

 Very little electric is generated in most countries by burning oil any more, outside of OPEC itself.