Topic: No ROI buying S3 and without electricity FEE ?¿??¿?¿? - page 2. (Read 2766 times)

With the currently available hardware, there is no possible way difficulty adjustments could be 20% for 6 months.  At that rate, even BitFury, MegabigPower, and CoinTerra would not be able to operate their gear at a profit.  Plus, at that rate they'd have to sell more and more BTC to cover operating/electricity costs, causing BTC price to tank, and making even more hardware unprofitable.  The difficulty is self adjusting, and if it got out of control like that, it could go down.

Now, when <20nm ASICS start joining the network at >5GH / Watt, things could accelerate again.

Did you notice that the from the last 10 times only 2 times a increase larger than 15% took place?

Thanks a lot!  
I really think  as you,   20%  is huge  and 8 weeks  for double hash rate................  but  on the other side,  I see this chart:   (about 30% every 30 days  if you get the last year data)


Difficulty History

Date           Difficulty           Change   Hash Rate
Jul 25 2014   18,736,441,558   8.08%   134,120,673 GH/s
Jul 12 2014   17,336,316,979   3.08%   124,098,191 GH/s
Jun 29 2014   16,818,461,371   24.93%   120,391,236 GH/s
Jun 18 2014   13,462,580,115   14.51%   96,368,902 GH/s
Jun 05 2014   11,756,551,917   12.44%   84,156,677 GH/s
May 24 2014   10,455,720,138   18.10%   74,844,960 GH/s
May 12 2014   8,853,416,309   10.66%   63,375,223 GH/s
Apr 29 2014   8,000,872,136   14.64%   57,272,474 GH/s
Apr 17 2014   6,978,842,650   14.04%   49,956,502 GH/s
Apr 05 2014   6,119,726,089   22.23%   43,806,706 GH/s
Mar 24 2014   5,006,860,589   17.80%   35,840,504 GH/s
Mar 13 2014   4,250,217,920   11.39%   30,424,245 GH/s
Feb 28 2014   3,815,723,799   21.92%   27,314,015 GH/s
Feb 17 2014   3,129,573,175   19.39%   22,402,357 GH/s
Feb 05 2014   2,621,404,453   19.49%   18,764,744 GH/s
Jan 24 2014   2,193,847,870   22.59%   15,704,175 GH/s
Jan 13 2014   1,789,546,951   26.16%   12,810,076 GH/s
Jan 02 2014   1,418,481,395   20.12%   10,153,885 GH/s
Dec 21 2013   1,180,923,195   30.01%   8,453,378 GH/s
Dec 10 2013   908,350,862   28.41%   6,502,229 GH/s
Nov 29 2013   707,408,283   16.07%   5,063,826 GH/s
Nov 17 2013   609,482,680   19.29%   4,362,847 GH/s
Nov 05 2013   510,929,738   30.70%   3,657,378 GH/s
Oct 26 2013   390,928,788   46.02%   2,798,377 GH/s
Oct 16 2013   267,731,249   41.45%   1,916,495 GH/s
Oct 06 2013   189,281,249   27.19%   1,354,928 GH/s
Sep 25 2013   148,819,200   32.13%   1,065,289 GH/s
Sep 14 2013   112,628,549   29.56%   806,227 GH/s
Sep 04 2013   86,933,018           32.22%   622,291 GH/s
Aug 24 2013   65,750,060           29.40%   470,657 GH/s
Aug 13 2013   50,810,339           35.88%   363,715 GH/s
Aug 03 2013   37,392,766           19.63%   267,668 GH/s
Jul 22 2013   31,256,961           19.47%   223,746 GH/s
Jul 11 2013   26,162,876           22.63%   187,281 GH/s
Jun 29 2013   21,335,329           10.32%   152,724 GH/s
Jun 16 2013   19,339,258           23.92%   138,436 GH/s
Jun 05 2013   15,605,633     28.41%   111,709 GH/s
May 25 2013   12,153,412    8.64%   86,998 GH/s
May 12 2013   11,187,257    11.03%   80,082 GH/s
Apr 30 2013   10,076,293           12.28%   72,129 GH/s
Apr 17 2013   8,974,296       16.96%   64,241 GH/s
Apr 05 2013   7,673,000       14.59%   54,925 GH/s
Mar 24 2013   6,695,826      38.13%   47,931 GH/s
Mar 14 2013   4,847,647      10.98%   34,701 GH/s
Mar 01 2013   4,367,876       19.63%   31,266 GH/s
Feb 18 2013   3,651,012      11.47%   26,135 GH/s
Feb 05 2013   3,275,465      10.33%   23,447 GH/s
Jan 23 2013   2,968,775      -8.64%   21,251 GH/s
Jan 08 2013   3,249,550       9.06%   23,261 GH/s

Well, the price depends of course on where you live.

I don't think that a 20% increase is possible, because that'd mean that in 8 weeks the total hashing power needs to be doubled. I doubt that that will happen.

I used  $ 600 with  customs fee and deliver........  maybe $ 550  ??

I think 20% is accurate,   I was looking Graph from blockchain  ,   and seems a solid grow...... not?


Thanks a lot

That calculator has never been accurate for me, at all... it's never returned a correct btc est. value for me.  I just avoid it...

I find this one to be more accurate:
http://www.bitcoinx.com/profit/

The hardware price isn't 600$, but 400$
Edit: A difficulty increase of 20% for the next months isn't going to happen in my opinion.

Im really disapointed...... just wanting to buy a few  Antminer S3  cause I can use them  at work  where I have no electricity fee.........

I was seeing the ROI ,  using this calculator:

https://bitcoinwisdom.com/bitcoin/calculator

Please,  can someone help me???   I dont understand why  ROI is impossible  even  without electricity fee........  or this calculator is not accurate??? 

Thanks!!!


https://i.imgur.com/zoChzfL.png