I have an Intel D975XBX motherboard w/Intel 965EE processor. I use this for business computing, video & graphics editing, movies, and games. What level or spec of video graphics card do you suggest?
Visit the site of your video and graphic editing softwares support section to see if they support gpu processing. Match your query to the version software you have or plan to get as sometime gpu support changes between versions. Get one of their recommended cards.
otherwise any old gpu will do as long as it can run your monitor(s).