How much should I spend on a power supply? I am building a rig with 6 1070s and was thinking of buying a EVGA SuperNOVA 1600 P2 80+ PLATINUM. Any advice is appreciated.
Can't go wrong with those - they are pricey but those and G2 850's are my 2 top favorite PSU's. I also have Thermaltake 1500, Quark 850's and Corsair 850's, all of them have been hashing away for the past year no issues so far but who knows down the line.
850 PSU is enough for the 3 cards are something but if you want to extend the multiple graphics card in the mining board you will get the 1200 power supply means you will get the better supply for mining rig. You can build the mining rig with the 12 cards with the double step rig.
Cards are according to the cost you spare for it. Most preferable mining card is rx 470 8GB cards or nividia 1070ti cards. Choose the card according to the amount you invested.