Hello guys.I`m thinking of building a mining rig,but I still have some questions.I allready have the motherboard(biostar tb85 6 pci slots),I3 proccesor,4 gb ddr3 ram,320 gb hdd from a old laptop,750w gold psu and one gpu(rx580 8 gb nitro+).I started mining eth in nanopool(~16 mh and arround 1$/day ...