Gotta have a job before you can lose it <| sep |> Some food for thoughtFGPA miners came onto the scene in late 2012 early 2013 , within a few months these rendered any CPU or GPU mining unprofitable as the difficulty began to rise ~ 1 M in Jan 2012 to ~ 3 M in Jan 2013 . The development of ASIC ' s was rife with problems in the early days , but by 2014 they were rolling out into the network , we see difficulty rise from 3 M in Jan 2013 to 970 M in Jan 2014 . By now CPUGPU mining would be laughably ineffective . From Jan 2014 ASIC ' s have become more efficient , and today ' s difficulty 3 years later stands at 281 quadrillion . You would never reach a minimum payout with a CPUGPU and would be burning millions of times more energy per hash than a modern ASIC . To compare Your GTX 1070 would likely produce ~ 200 MHashs the closest comparison I could find was a GTX 680 120 Mhashs and would net you nothing today . To mine 100 BTCday you would need to go back pre October 2010 at a difficulty under 2000 . I have also allotted for the 50 BTCblock reward back in 2010 vs . the 12 . 5 BTCblock today . Today 200 MHs will net you 0 . 000005354 BTCmonth . ORUsing the S 9 miner today you would need 112 Petahash 9300 Antminer S 9 ' s consuming ~ 11 . 2 MW of power 247 at a daily cost of ~$ 10 , 000 USD $ 0 . 036 USDkWH to produce the same 100 BTCday . FGPAASIC hashpower comparisonGPUCPU hashpower c o m p a r i s o n s p e c i a l i z e d h a r dwarecomparisonHistorical d i f f i c u l t y m iningdifficultytimeProfit calculator