That's the card I have on my computer. I run the game in 1920x1080 resolution, and while I play on low or medium, high is pretty seamless as well (I play on lower settings because I think the terrain is easier to see), and this is all on a 27" screen...so I'd say you'd be fine, although I'm not sure about ur PSU.
Money can't buy happiness. Just video games, which make me happy.







