KillerGamer :
Look at the Nvidia GTX650TI 2GB model (Not the TI boost) or the Radeon HD7770. Also, if you can stretch your budget a little bit you can get the Radeon HD7870 and the Nvidia GTX660 (Non TI) which are way better in almost every parameter. Nvidia has the advantage of PhysX while select ATI/AMD GPUs are getting Mantle.
Thank you, I will try to upgrade in the future but I can't upgrade my budget atm.
When I do upgrade though I am going to make my budget for a GPU $450-$500