You can upgrade to any card you want, you just need to make sure you have a powerful enough power supply. It also has to fit in your case, and your budget is a factor, too.
Thank you for your quick response to my question. What I am trying to do is be able to play Secret World when it comes out. It says you have to have at leasta 350 series Graphics card to run it and mine is only 3400 and I am wondering if I can upgrade so I can run the game