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A single gtx 1070 is getting me 5.10 USD/Day but that's at 90% gpu usage.

How many do you have?

Five RX 480 8gb.

Oh okay wonderful! Yes I've been looking at getting into some mining especially with the current price rises. Also looking at some different mining platforms to see what my best options are...Then I'll go from there...I would guess you have to factor in power cost and maintenance of the rig/rigs as well?