Finally I decided to build my Ethereum rig with 6 Gtx 1060 (6gb version). I would have some questions:
-How do I check what type of RAM the graphic card is? It is true that only Samsung and Micron RAM allow a good overclock? Wich GTX 1060 brand should I choose?
-What kind of power supply do you recommend? 850w is ok?
-Ram? 4 gb should be ok... DDR 4?
-Motherboard and cpu: A normal Celeron would be ok, right?. Wich one exactly? I obviously also need to find a motherboard that supports that type of cpu. ASRock maybe is a good choice. Wich model should I choose?
Thank you!

GTX 1060 - not best card for ETH mining,only if u have Samsung memory, will be better to mine Zcash.
- How to check memory? Download GPU-Z app for Windows.
- 4gb - it's enough
- Buy G1840 celeron ( the cheapiest cpu)
- How to choose motherboard? Find correct soket for cpu and 6 pci slots. Brand - doesn't matter.