rather than buying the expensive adapter for my 3rd monitor could i use an old 6950 as an additional card just for its hdmi port? my current card is an amd 7970 and my current plugins are 1 dvi, 2 hdmi. this is my issue. i cannot find an adaptor for the mini display port to hdmi that is active and even on amd's site they dont list one from any company that is an active port. Would just installing the 6950 as a secondary card in non xfire mode work?