Sangeet Khatri :
This should be the most to the point answer.
From Most Powerful to least Powerful :
660 > 7850 > 650Ti > 550Ti
You can mark thread as solved anytime when you find the answer you were looking for by selecting that answer as the best answer. It would be appreciated by other guys who are looking for similar answers.
either you didn't read post, or your giving the wrong information.
GTX660 > 7850 >560ti > 650ti
there's no 550ti in the equation
To the OP - model numbers, and OC/SC are really just gimmicks, and the numbers associated which each card, may not reflect real world performance. Take the 650ti for example. Newer gen than a 560ti, yet the 560ti outperforms it. It is kind of confusing, but always try to research a little or ask on Toms, and we will put you right