GPU must be connected to PCIe slot so PCI will not work.
I think you could find more modern motherboards when putting so much money on a rig.
It would probably work anyway but you want it to last for a while.
Maybe moderboard with Ryzen CPU to mine some CPU only coins in addition to GPU mining?
I'm new in this world since this month
WHat i know is that cpu mining is not profitable anymore thats why i was putting up an GPU miner machine
Do you have any better specs to mine with the current diff on most coins?
You can mine with the CPU on tour GPU rig as an addition to get some more coins.
As an example my Ryzen 7 1700 get 500 H/s on cryptonight, the same hashrate as my GTX 1060.
I have mined thousands of intensecoins with my CPU before the difficulty and price went up.
It paid itself several times.