Both your current gpu and cpu are bottlenecks. A 960 will give you a nice boost but your cpu will bottleneck it at times. If you can find a cheap used LGA-1155 i5 or i7 ( such as but not limited to a 2500k, 2600k, 2700k) it would make your system handle newer games and not bottleneck a high end gpu. What do you have for a motherboard currently?