I have free power source and want to plug in one rig for start. Which GPU's do you recomend me? Thanks!
PS:
What about this GPU?
AMD Radeon RX580 Sapphire NITRO+ 8GB GDDR5, 2xHDMI/2xDP/256bit/11265-01-20G
These are good GPU's. Mine run very stable (32mH/s for ETH). They do use quite some power. So depending on the power cost you might go for an 570. Not sure what their hashrate is.