This is all you'll need to run games at that resolution...
Or, if you want something a bit more conventional, try a 650Ti, or maybe even a 650Ti Boost. Conversely, for AMD, a 7770 will most likely do, but a 7850 might be worth it to make sure (someone can correct me with the new AMD cards, haven't had a chance to really look into them yet, though I know the lower models are just rebrands anyhoo)