I got an ASUS M2N-E with only 1 PCI-E X16 running a 5830 and i'm thinking about using a riser (x4 to x16 i guess) and add a 6950
Received my risers.. and tried to add the 5850 card .. Windows don't like it.. it's listed as :"unknown device" in devide manager..
and i tried to reinstall drivers, and even short the pci-e bus pins .. dunno what to do to make it work..
I have found that some older boards just don't like to see newer video cards 58xx and higher. They would work with a 54xx card and be fine but that would be near pointless for mining.
That same board is able to see the 6950 that's already installed...
And it can see the 5850 too if installed in the x16 slot..