Topic: [ANN] Spondoolies-Tech - carrier grade, data center ready mining rigs - page 447. (Read 1260350 times)

I'm getting just under 4.4Th/s @ 205v/205v    
Input temp is 19C

Hoping to tweak a little more and get it up to 4.5, any suggestions (other than what ive already read in this thread, and tried)?

Source?

It looks like newest Bitfury's DC has got probably 30 PH not 20 PH as it was claimed.

when the price crashed to around 400s difficulty really flattened for a while we need another crash or two to put these corporates underwater and get their loans due lol

That was true while the difficulty was raising fast and HW was getting cheaper fast. It will not be lake that from the autumn. It will be longer ROI.

I still want a unit. Just can't buy one right now.

I'd love to know at what point it becomes uneconomical  for the corporates currently piling in and they pull the plug.
I imagine small miners have more endurance for making losses than they do, not that it helps right now...

No.

Or we have a prolonged bear market (2011) and prices revisit levels not seen since april 2013. 

There's the problem.

I posted my difficulty predictions in this thread like two months ago, and many people laughed at how low the estimates for difficulty growth was. But so far, it's been right on the money, in fact the actual difficulty is slightly lower than I predicted. Come summer 2015 we will see negative difficulty adjustments more often than 10%+ ones, that is unless the bitcoin price increases dramatically of course.

https://docs.google.com/spreadsheets/d/1P_rgP9XnBvuznWdRi7IUKizQHUR0DNxDrl08H90juzc/edit#gid=0

hard to read your chart there is no profit for anyone at a 20% diff increase monthly I cant see how  that is sustainable since 20% increases per month by December all those
Shiny new Antminer s3's will be paperweights and that should cause diff to level off.  But who knows I guess.

One thing I do agree with is I doubt any machine bought now has a shelf life of greater than 3-4 months maybe 5 at the max so paying $1800 to $1600 for six months hosting makes no sense to me
since that's another sunk cost.  I would rather host it locally on a month to month basis so I can turn it off once it stops being useful.

am i missing something here? can't find any possibility of positive ROI

cost 3895 + 1800, 6 month hosting( being generous as roi seems to be in years) 15 % diff

2014            -10.04
9-25 – 9-30 (6 days)   30006 M   0.4346   0.4259   -9.618
10-1 – 10-31 (37 days)   34507 M   1.814   1.778   -7.84
11-1 – 11-30 (67 days)   45635 M   1.277   1.252   -6.589
12-1 – 12-31 (98 days)   60353 M   0.9482   0.9293   -5.66
2015
1-1 – 1-31 (129 days)   91790 M   0.6786   0.665   -4.994
2-1 – 2-28 (157 days)   121 G   0.4487   0.4397   -4.555
3-1 – 3-31 (188 days)   160 G   0.3631   0.3559   -4.199
4-1 – 4-30 (218 days)   244 G   0.2515   0.2465   -3.952
5-1 – 5-31 (249 days)   322 G   0.1889   0.1851   -3.767
6-1 – 6-30 (279 days)   427 G   0.1323   0.1296   -3.638
7-1 – 7-31 (310 days)   649 G   0.09757   0.09562   -3.542
8-1 – 8-31 (341 days)   858 G   0.07065   0.06924   -3.473
9-1 – 9-30 (371 days)   1135 G   0.04936   0.04837   -3.425
10-1 – 10-31 (402 days)   1727 G   0.03651   0.03578   -3.389
11-1 – 11-30 (432 days)   2284 G   0.02571   0.0252   -3.364
12-1 – 12-31 (463 days)   3021 G   0.01915   0.01877   -3.345
2016
1-1 – 1-31 (494 days)   4595 G   0.01365   0.01338   -3.331
2-1 – 2-29 (523 days)   6077 G   0.00932   0.009133   -3.322
3-1 – 3-31 (554 days)   8037 G   0.007238   0.007093   -3.315
4-1 – 4-30 (584 days)   12224 G   0.005016   0.004916   -3.31
5-1 – 5-31 (615 days)   16166 G   0.003767   0.003691   -3.307
6-1 – 6-30 (645 days)   21380 G   0.002636   0.002583   -3.304
7-1 – 7-31 (676 days)   32516 G   0.001946   0.001907   -3.302
8-1 – 8-31 (707 days)   43003 G   0.001409   0.001381   -3.301
9-1 – 9-30 (737 days)   56871 G   0.0009837   0.000964   -3.3
10-1 – 10-31 (768 days)   86494 G   0.0007282   0.0007136   -3.299
11-1 – 11-30 (798 days)   114389 G   0.0005128   0.0005025   -3.299
12-1 – 12-31 (829 days)   151279 G   0.0003818   0.0003741   -3.298
2017
1-1 – 1-31 (860 days)   230077 G   0.0002724   0.0002669   -3.298
2-1 – 2-28 (888 days)   304277 G   0.0001802   0.0001766   -3.298
3-1 – 3-31 (919 days)   402407 G   0.0001462   0.0001433   -3.298
4-1 – 4-30 (949 days)   612011 G   0.0001009   0.00009893   -3.297
5-1 – 5-31 (980 days)   809385 G   0.00007581   0.00007429   -3.297
6-1 – 6-30 (1010 days)   1070411 G   0.00005321   0.00005215   -3.297
7-1 – 7-31 (1041 days)   1415619 G   0.00003921   0.00003842   -3.297
8-1 – 8-31 (1072 days)   2152980 G   0.00002836   0.00002779   -3.297
9-1 – 9-30 (1102 days)   2847316 G   0.00001988   0.00001948   -3.297
10-1 – 10-31 (1133 days)   4330412 G   0.00001465   0.00001436   -3.297
11-1 – 11-30 (1163 days)   5726970 G   0.00001032   0.00001012   -3.297
12-1 – 12-31 (1194 days)   7573918 G   0.000007711   0.000007557   -3.297
2018

GPU/FPGA -> ASIC was a 100x increase, but look over the past 1.5 years. We've gone from 68GH/s Avalons at 620W to 4.5TH/s at 3000W.

That's 65x the speed, and almost 15x the efficiency. "ASICs" weren't the end-all to the rising difficulty that people hoped they would be, nor do we see any sign that it's going to let up anytime soon.

What trend is over?

Consider an SP30, $4000, 4.5 TH/s, 3000 watts:

Hosting cost at $.15/kwh per day: $11
Income per day: $66

Expect difficulty to continue to rise at least 6x from now.

Unless we have a major technological breakthrough this trend is over. Who knows, maybe quantum computing is coming!

Time to repost this.

And this http://bitcoin.sipa.be/speed-lin.png

~L)L~

or 10 bucks

There is better than even chances that this will go down as the greatest tulip mania of all time.

~L)L~

2016 is a long way away though, i bet when block halving happens the coins will be selling for near double what they are now so it won't affect the big boys as much as you hope

You and me both.  You know they have to figure that most of the income from miners comes in the first 3 months, so around Q1 of 2016 they will stop adding hardware since it wlll never pay for itself.  The only people who can keep selling would be cloudmining since their buyers typically will trust any website as long as it has good eye candy.

Excellent points friend and this is why i wonder if this new hash is from someone else other than them because I'm sure they are not stupid why would they keep building more hardware more DATOR halls with the current state of diminishing returns.  Another factor to consider i guess is if they are in the Ex-USSR like it was previously stated they also have cheap labor along with their cheap electricity.