Quote from: BeerMan81 on May 19, 2017, 03:54:02 PM

Conversion to risers has begun! 12 Risers came in the mail, and some more cards.

The MB in my media server is an MSI X99 Gaming 7 https://us.msi.com/Motherboard/support/X99A-GAMING-7.html. It has already has 6 PCIE slots! My plan was to leave one GPU in the case and have 4 cards outside the case connected via risers. But for some reason, I couldn't get get the MB to see the 5th card Huh

Do all the cards need to be connected via risers to see more than 4 cards? Is it the order that they are in?? Very strange. Also, i am at capacity of my UPS...Could this have something to do with it?

Slot 0 GPU
Slot 1 empty (cant get to it)
Slot 2 GPU
Slot 3 GPU
Slot 4 GPU
Slot 5 MB wont detect

Thoughts?

A lot of motherboards with enough PCIE slots still can't do that many cards. You should check in the bios for PCI speed setting and if there's an option for Above 4g decoding. Mess around with those, but if it doesn't work, then most likely the mobo doesn't support it.