already have a gtx 660 TI and a power supply too its 650W or something like that also would need a new operating system included in the total please try and keep it below 600$. don't need a new graphics card or power supply.
also I already know that it would bottle nec my games I don't mind really just as long as I can hopefully get 40 fps on most games if not post a better build that would out do the gtx 660 and still be below 600$ and don't worry about the psu.