I assume that I was not paying for the electricity.
On bitmaintech.com S7+PSU+shipping is around 1300 dollars.
with current difficulty you can mine 240 dollars a month or 120 dollars till the next dif increase.
assume an avg. 5 percent dif increase in every 2 weeks, the total amount I'll mine:
The regarding code:
And the results are, even with free electricity you should have avg. difficulty increase below 9% to get RoI
this results made me pull back from investing in an S7 what are your thoughts?
It's no longer a 3 month ROI like it once was. Your looking at a longer time of mining. With free it seems like you would reach it... just would be a matter of time. I think we have had a hard time past 2 months of difficulty we were sitting on a lot less per change. A lot hope it changes back, but there is no guardsmen in mining.