Graphic Card Comparison

I'd go with the 7850, it's more powerful of the 2. The 650ti is a competition for the 7790, the 650ti boost is competition for the 7850 (in both cases the Radeon cards win price/performance).

If you have the money, go for a R9 270, which replaces the 7870. But the card you mention falls right between the price segments on Tom's recommended list:
http://www.tomshardware.com/reviews/gaming-graphics-card-review,3107-3.html
 
Solution