I'm wanting to take my old PC out of the closet and use it to stream Motocross races in HD to my big screen with a HDMi hookup. It is a system I built about three years ago but doesn't have a video card. It is a Asus P6X58D MB and a i7 960 3.2 ghz chip with 6 gb of ram. One quirk of this motherboard is the sata connectors sit right under the back end of the video card so a longer card can cause clearance issues as I found out when I upgraded to a EVGA GTX-580 and tried to use it in this system a little over a year ago.
Anyway I need a card with HDMi out to put in this system. It won't be used for anything else so I was just curious how beefy of a card will I need and how much memory? If I could find a card under $100 that would be great. Eventually this system will be passed along to one of my sisters. I just don't know what card would be best for this type of use.
Any suggestions would be appreciated.