I'm running a PC with an AMD FX-6100 6-Core CPU, 8GB of ram and the Radeon 7770 with a 600W PSU, and was considering upgrading my GPU to the R7 260X. Firstly, will my CPU be able handle this graphics card (it already gets hot when running games like AC4 and BF4), or is it worth upgrading my cpu instead? And is the R7 260X much of a leap ahead of the 7770 in terms of gaming performance?