^+2
The GPU will handle the game I would say med settings with the 2 core CPU. But if you don't like playing on med settings then some time down the road you should upgrade your CPU to a 4 core and your GPU to anything but the 550 Ti.
I have two of them and these cards are the worst cards ever that nVidia ever came out with. Even with two of them I doubt I could even do high settings in that game and I am not even going to try.
They have enough problems with the other games I play. Good luck on your weekend beta game.