Issue with 3 RX 470 on GIGABYTE G1 Gaming GA-Z97X-Gaming 7

I wonder if someone can help me with this.

I bought a GIGABYTE G1 Gaming GA-Z97X-Gaming 7 to use it for mining.

It works with 2 RX 470, but not with three.
Any configuration i have tried on the PCI slots will not work.

The fan on the third card will stop spinning and it will eventually shut down.

Any ideas about which slots to use, or any other idea more than welcome

many thanx for your time

ted

Helloļ¼
Did you try to test two cards, two cards to run?

You can try to update the MB's Bios.
(this work to me)

I'm not expert...so I just give you my opinion!
Good luck to u!

It works with 2 cards.

I will try update the BIOS. I suspect it has to do with shared PCI lanes but i will give it a shot