Probability of earning 25 bitcoin every month pretty much ZERO.

 You MIGHT get lucky and get a block once a few DECADES.




 I'm currently running a little over 7 TERRAHASH and pulling in on average a bit more than 1 bitcoin a MONTH (pool mining via Slush's pool) - which has been dropping quite a bit due to high diffuculty increases since the release of the S7 and especially the release of the Avalon 6 (and ramped up production/sales of both).

 IIRC the Block Eruptors had a highest version around 350 MH - that's less than 1/20000 (yes, One over Twenty THOUSAND) of the hashrate of my current Bitcoin mining setup. You do the math.

 I've never seen that high of efficiency out of my SP20, 0.45w/GH seems to be about the limit (818 Mh/s using 370 watts, 0.452w/GH at .59 v to be picky, my unit does NOT run reliably at any lower undervolt).

 Still the best of it's generation, just too bad they pushed the "high hashrate" side over the "high efficiency" side on their marketing.

 I just wish I'd had the money to buy them when they were cheap.

 8-(

 I have an 88 with fans on the back.

 I also have a 110 in an 88-size case (the 88 cases are shorter) that they had to cram a couple of THIN fans in to make work.

 Seems to be a few different variations.


 The only SURE way to tell the 88s from the 110s is the length of the hashboards - the 110 hashboards are a good bit longer to accomodate the extra pair of chips.



 As far as pools go, I've been using LiteGuardian for a long time - reliable, worked well with the A2s from very early on, even worked with the original software on the Alcheminers (by report) pretty well.
 My only issue with them is that they didn't update their "estimated payout based on your hashrate" when the block reward halfing happened, but that's a very minor issue.
 I'm probably going to bite the bullet and put up a P2Pool node at some point though.

Looks like the bubble may have already started to pop.

 There has been NO positive news for Bitcoin since the announcement about the Chinese exchanges being able to take Fiat currency directly, which makes it seem very likely that most of the price movements since then have been about Chinese traders getting to play with Bitcoin easily again.


 I'm still looking for $300 sometime, not sure if it will get there before the end of the year though.

The problem with assuming Christmas has anything to do with a Bitcoin price rise is that the retailers turn around and SELL OFF all that Christmas Bitcoin just as fast as it comes in, thus pushing the price right back down again.

 Ditto "Black Friday" or "Cyber Monday" just somewhat bigger numbers involved on BOTH sides of the equasion.


 It's WAY too early for the halfing to be having a real effect on the pricing IMO - more likely 1-2 months before the halfing will be the "halfing price increase".


 I'm fairly sure that most of the current price bouncing is due to the Chinese exchanges being able to take fiat currency directly again, and a mass influx of Chinese trading due to that change.

 In the SHORT run, there is no real support for the current price level rampup.

 In the LONG run, I do see Bitcoin pricing increasing - but it's going to bounce quite a bit in the meantime like most investments.

At this point, I'm still choosing "neither", as RoI is still VERY problematic at anything over 5cent/KWH power rates.

 I'm hoping the B-Eleven or whatever Innosilicon comes out with ignites some price competition, but it's starting to look like that will happen too late to matter.

 Depends on how hard you push it, it can be MORE efficient than an S5 if you undervolt it enough - but then the hashrate drops to S5 territory or less.


 2.2 GHs/watt sounds reasonable for a Sp20 undervolted to .605 or so.

 Mine did 864GH at .600 volts / 400 wall watts or 1038GH / .610v / 507 ww during my early testing of it on a Seasonic X-1250 (Gold) PS.

 Currently pushing around 1450 Ghs / 0.670 / 900ish watts (I've got the power limits set a bit lower on 2 of the loops that tend to run hotter).

KnC has had no significant hash rate increase in a LONG time in their in-house pool.
 Dunno if they're having yield issues on their announced "solar" chip, or if they were making bogus claims of "when" AGAIN, or if they're in a major financial bind and can't buy enough of them to matter (one post somewhere on the forums here mentioned their bank "freezing" their account).


 I suppose I should list them as 7) though.

 Not always true, it depends a lot on HOW MUCH free electricity you have available.

15 PH of cloud hashing, at 3 TH per machine, works out to 5000 machines - yeah, that might take a little while to fill. If they do it as the 10TH mentioned option, it's only 1500 machines - probably can fill that in a month or less if they get enough chips out of the foundry.

 Mostly I'm waiting to see what the A3 ends up looking like in a machine, at this point.

Then he should call it a 'predictive" number, not keep refering to an instant PEAK number (which was NOT valid over a 24 hour period despite his bogus claim about that) as the current hashrate.

 It would take a lot more than that, there are quite a few major farms outside of China.
 It would probably do some major hit to Bitcoin price if that happened, though.

 And again, you're looking at an INSTANTANIOUS estimate that has very little to no meaning.

 We MIGHT hit 963xxx sustained TH in a couple weeks though, at the current rate of REAL hashrate increase.



 I'm starting to wonder about that KnC announcement. Would not be the first time they made claims they later had to retract.
 I find it interesting that the only definitive "full custom 14nm" announcement (Innosilicon A3/A4) doesn't claim sub-0.1 just close to that level (with final specs not absolutely announced).
 I also find it interesting that KnC's pool hasn't shown any significant hashrate increase for a long time now.

 I would NOT be supprised if BitFury finally got it's next-gen chip into production, and gear based on that being part of the reason for the current hashrate climb.

 Part of it COULD be BW.com/Lketc getting the B-Eleven into production a bit earlier than most of us expected.

We've seen bigger diff adjustments in the past, just not in the last couple years or so.

 I expect it's a combination of factors:

 1) Bitmain continuing to build S7s as fast as they can, deploying them to their own farm 'till they can sell some of them.
 2) Avalon getting 6 production ramped up, then see #1.
 3) Possibility BitFury has gotten it's new 14nm gear into full production.
 4) Possibility Spondoolies has gotten the SP50 into production.
 5) Possibility BW.com got the B-Eleven into production earlier than expected.
 6) Long shot Innosilicon has gotten the A3 into production months earlier than estimated.



 Generation change is happening in miners, always fuels a high amount of new hashrate for a while.

I'd wait a couple months or so, see what BW.com prices the B-Eleven at, and what Innosilicon does with their A3.

On the KnC thing, more likely part of the leadup to a forced bankrupcy. KnC has a BUNCH of debts outstanding, and a TON of legal issues.

 On the recent hashrate climb, I'd guess a combination of folks getting production ramped up - Bitmain and Avalon for sure, possibly BitFury, unlikely but possible BW.com/Lketc (they're not really expected for a month or so, but they've been keeping things sorts close lately), possibly Spondoolies, very long shot Innosilicon (not really due for a couple more months).

 Quantum computers are HORRIBLE at straight-line type calculations like cryptocurrentcy uses.
 NOT an option.
 They only perform well compared to conventional computing gear on stuff with a TON of variables that interact with each other.


 Any government that decided to start mining Bitcoin (pretty close to ZERO probability) would be limited by the available hardware makers available production.
 NOT a factor.

$500/TH would be higher than what Bitmain wants for the S7 - which is ALREADY iffy to achieve RoI unless you have very very cheap electric.
The published specs show the B-Eleven being a hair LESS efficient than the S7, so it's both going to return less per TH and cost more per TH than the S7, making it HARDER to achieve RoI on it than the S7.



 This is the first time Lketc would have designed their own ASIC - previous Lketc miners used Innosilicon chips.
 They have a good track record with miner design, no track record with ASIC design - which puts them one step ahead of Gridseed/SFards.

Gotta wonder why you bothered reposting the same link I've already mentioned DOES NOT WORK FOR ME.

 Getting the Spondoolies. They don't appear to be interested in selling to anyone but major farms.

 Give it 2-3 months and see what Lketc/BW.com and Innosilicon come up with.

Is that calculator taking electric cost into account?

 Otherwise, the primary catch is the rate of difficulty increase.