Hello everyone,

I'm new here and I'm confused what is better

It is now 2 month while i'm in all this mining thing

I had no problems getting gpu's but I had problems getting normal psu like 1200W or more (had to wait 2-3 month)
All I was able to get was 850W psu all gold.

So.. For now I have 4 rigs of 4 gpu and 1 rig of 7 gpu

All 4 rigs runs on one 850W psu, electricity draw is 600-650W from wall, they works fine, no errors, no hash rates down to 0 or something. All stable all good.
Another one rig have one 750W psu and 850W psu connected with dual psu cable. This one works well too.

Before all this setup I had less rigs with more gpu, one rig had 12 gpu connected to ASROCK H110 PRO BTC+ and had 3 power supplies of 850W each, but it got crashed like 5 times a day, Issues was various, sometimes OS stucks (ethos), sometimes hash rates drops down to 0 on random gpu, sometimes risers (but after changing risers to new ones there were same problems)

Another rig had 2x750W psu connected with dual psu cable and 6 gpu and there was same issues as in rig with 12 gpus, hash rates drops down to 0 on random gpu and etc..

So I decided to split all cards to be powered with one psu. Now one mobo and 4 gpus are powered by one 850W psu.

I have total 680 mh/s rate mining ETH, In nanopool they find 440-520 shares / hour. Or 0.06 eth/ day.

As I have 2 motherboards with 12+ pci-e slots I'm able to assembly 2 rigs of 12 gpus each. But I was wondering could I get better results of founding shares If I have 2 rigs instead of 5 with same quantity of gpus?

And should I use add2psu connectors instead of dual psu cable using 3 psu of 850W each powering 12 cards. Or there is better way to get one good 1800W mining edition power supply?