I have a Asrock motherboard with 12 pci slots but not all of them deliver the same performance. Maybe I should send back the motherboard but that would mean stop mining for a while so I thought I could maybe maximize the potential of those working well by using a PCI expansion card.
There is a cheap one here: Aliexpress
Or a more expensive one here: Amazon
(but with more than 500 reviews!)
I don't know what would mean in terms of bandwidth for the PCI slot ? Or power ? Or what would be the consequence for the OS ? (I'm using Ubuntu)
Anyone with experience on this?