I'm thinking of building a mining/gaming PC with 2 GPUs and was thinking which setup would be best to cover the majority of algorithms (non-SHA-256 related)/altcoins with decent speeds.


1. Have you guys tried to mix nvidia (e.g. GTX 1060 6gb) & amd (e.g. RX 470 4gb ) on the same motherboard? Does this help in covering more algorithms with better speeds?
2. Any idea on the power consumption of the whole system? I've seen posts about these cards under volted @ 110 - 150w, so would 4-500w/h be a good approximation of the wall consumption for the whole system?
3. Would investing in a good CPU also be a good idea? If so what do you recommend?


P.S. I'm more interested in treating this as an investment (mining coins and keeping them/exchanging for others not selling them asap).