You can, depending on the mods, but you'd not get 60FPS.Tom's
review (nearly a year old, so driver updates are already out) shows the 650Ti getting 46FPs min (FXAA, not MSAA). Some cosmetic hardly affect performance Guards Uniform
for one example is very very light while others can bring even solid systems down.
Note, the review used in Intel CPU, but you should be alright anyways. Personally, I'd spend a bit more on either the GPU or GPU and CPU. (the 7850 / 660 non-TI) both get 68FPS minimum, very good alternatives.
Edit: I noticed your RAM is C11 timings. Look for ones that are C9. It might not be a huge difference, but it's the better chips.