dragonx1983 :
im playing at 1680x1050 widescreen
Here are the charts for that resolution. That gives you more leeway, and maybe you can get by with a lesser card, but I'm trying to get you up to at least 40 FPS minimum. A GTX 650 Ti or 7770 at minimum would be where I would feel comfortable. With the 6770 you are going to be right around 30 FPS, which is just not good enough for "max" settings. I still think the GTX 650 Ti Boost is the way to go.
What's your budget and where do you prefer to buy your parts?