iarcherz :
Eventually upgrading my pc mainly for gaming is it worth changing my cpu? Is it really going to deliver more preformance than I already have?
Definetly not worth it.
If anything, I would either wait for Broadwell or Skylake (next generation Intel processors), or get a better graphics card, such as the GTX 780/780 Ti, R9 290, perhaps an SSD if you don't have one.
Those will actually deliver results you can see, in a real world situation, with your current CPU- there is basically no difference unless you go to the professional side of CPUs.
Have a great day.
Dave