Hi,

after 2 weeks reading & researching and finally able to source 26 GPUs (it was hard time here in EU), I have everything being shipped to me, I just need to order PSUs.

My 2 13 GPUs rigs will be powered each by 4 PSUs. I want them to be stable with stock GPU voltages, so this is my starting point. Afterwards I will limit power and get into sweat spot for hash/power consumption.

Rig 1 will consist of;

13 x EVGA GTX 1070Ti SC (single 8 pin power connector)
Asrock H110 Pro BTC+
Intel i3 3.9GHz (7th gen - Kaby Lake)
8 GB DDR4 2133 ram
9 Delta 120 x 120 x 38mm fans

Here I thought to power whole system with 4 x Corsair AX860 PSUs (3 PSUs powering 4 x 1070ti each, the 4th one would power 1 x 1070ti and the rest of the system (CPU, Mobo, Fans, Risers).

Rig 2 will consist of;

13 x EVGA GTX 1080Ti SC (8 pin + 6 pin power connector)
Asrock H110 Pro BTC+
Intel i3 3.9GHz (7th gen - Kaby Lake)
8 GB DDR4 2133 ram
9 Delta 120 x 120 x 38mm fans

Here I thought to power whole system with 3 x Corsair AX1200i PSUs (3 PSUs powering 3 x 1080Ti each) and Corsair AX1500i to power 4 x 1080Ti and the rest of the system (CPU, Mobo, Fans, Risers).

Can you please advise if my choices regarding power requirements are correct, or I have maybe over powered the rigs. What would be  best suggestion for my situation?