Dec 10, 2013 Once the Bitcoin difficulty factor reached a certain level in 2011, CPU mining became unprofitable and people started to switch to GPU mining. GPU's are found on These were much more affordable, ranging (current pricing) from $48 for a 1 Gh/s machine to $1000 for a 20 Gh/s machine. Gh/s (Giga 

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Jan 5, 2018 Since the cost of electricity is a determining factor for your profitability when mining, you should always be aware of the rates for your area. Calculating mining profitability: It's possible to calculate approximate profitability, however, due to the ever-changing nature of the Difficulty modifier and the BTC price, 

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