From what it looks like, it will. What is your per-core usage like when gaming? If atleast one is near 100% the CPU is the limiting factor.
Also, don't expect a new GPU to increase your framerate a. Your CPU will bottleneck the same no matter the card.
To be sure, turn down your resolution temporarily to ~500x500. The FPS you receive there should be your CPUs limits. If you desire better framerates, you'd need a CPU upgrade. A GPU upgrade will only increase the graphical settings and resolution the game can be played at while maintaining a framerate goal.