It's not recommended to build a farm only for miming Monero.
A month before, as monero became expensive it was quite profitable, but it's not very good now.
If you really want to mine Monero, build mining rig with Ryzen + Rx580.
Mining Monero with Ryzen and ethereum with Rx580 is one of the best options for now.
how about CPu amd ryzen Threadripper Processors, someone said profit and other said not profit, have ever try mining with this kind processor ?
need advice since you are mining expert, thanks before