I have a 5,1 mac pro, and just purchased a 2gb rx560 gigabyte edition. I thought it twould work right out of the box. I left the NVIDIA GeForce GT 120 512 MB in hooked up to my 20" aluminum cinema display so I could see the boot screen, but the second monitor wouldnt display anything, the pici system report just says "There was an error while gathering PCI device information", and the fans in the card are making a crap ton of noise. I have sierra 10.12.3 installed on a samsung 512 gb ssd along with a 3.46 ghz quad core xenon processor and 8gb of ram.
[doublepost=1502842342][/doublepost]ok, removed the old gforce card and switched pci slots, now it works fine.
[doublepost=1502842342][/doublepost]ok, removed the old gforce card and switched pci slots, now it works fine.