Hi there,
Yes, they should be compatable!
Two things to try.
■I don't see on the video card image what accessory power PCI-e connector you need to plug into the card for additional power, but check and make sure your additional power cable is connected properly.
■If you get a black screen with one of the output connectors, like the VGA plug, try the DVI or Display Port connector to see if the output is being directed for some reason to one of the other ports.