After a lot of reading, here is where im at.
Gigabyte 250 motherboard
i3 kaby lake
16 gb crucial
5 x rx 580's
1 x rx 570
1 x rm850x
One card went down so i purchased the rm1200 in case it was a power issue, currently running 5 cards getting 138 hashrate @ 670 watts total output.
My question is some of my gpu cards have only 1x8 pin connector and some have 2 x 8 pin connectors. I read that i should use both 8 pins on the cards but i am only using one and having no problems. Is this a disaster waiting to happen?