The S version of Antminer is only to mine SHA256 algorithm which is the Bitcoin algorithm. In case you have not free electricity they are not worth it, and even with free electricity I doubt they would do you any good.
As you see in the link below, the S2 makes you 1.26 USD a day with the price of bitcoin being 7255 without considering energy and maintenance cost. That number I am sure would be - or negative if you add the energy consumption.
http://bitcoineval.com/hardware.php
That's a nice table there - bookmarked, thanks.As you see in the link below, the S2 makes you 1.26 USD a day with the price of bitcoin being 7255 without considering energy and maintenance cost. That number I am sure would be - or negative if you add the energy consumption.
http://bitcoineval.com/hardware.php
On the other note, the topic starter can try mining some "smaller" coins, like Aurora or Digibyte, on the websites that offer switching the coin based on profitability (zpool, for example). But anyways you will barely make any profit and only in the case if you have really cheap electricity, below 5 cents per kWh.
but why people still pay about $250 for them on ebay? 