So the 7950 has a 10% better score than my GTX660Ti...hmm
My CPU score is a bit higher because i run it at 4.2GHZ instead of the stock 3.5GHZ.
If you use the ASUS overclock profiles and take one that can run your system steady without pushing it too hard, your score will fly by mine.
Any score above 20K total should be enough to run all modern games smoothly. And with the limits set due to the new consoles, you won't have to worry about upgrading soon®
Only if you want to go tri-screen and you need a SLI/CF configuration, that will be the big investment.
I don't have place for tri-screen now anyway. I do like it, but it is no must have for me now. Definitely something i will look into in the future. But now i'm more interested in going 4K. That will be the next big step. A GTX780 is a nice upgrade to get there