I am building a new PC and need a recomendation for a video card. Gaming will not be done, but the card will be used for CAD and other design software so it should be decent. Is it better to get 2 cards or just get one. I have sitting here a XFX radeon 6770 that will do what i need but requires me to use the Display Port and I need to get an adapter for going over to DVI. Is this the best fit for my needs. Let me know what you guys recomend.