At the moment I have a hd 7850 2gb powercolor which can overclock from Core clock 860 to 1050 and memory clock from 1200 to 1450 in msi afterburner. I am also thinking about overclocking my processor Amd Phenom(tm) II X4 945 Processor from 3.00 to 3.3 or 3.5 if I can. At the moment I cant because I am using a 500 watt which is minimum requirement for my gpu but I am thinking about getting a 600-650 power supply for these overclocks. Im just wondering is it possible to overclock both and would I see a big difference in games like Bf4 which im currently getting only 25-35 fps sometimes even 20 and skyrim where i get 35-50 with all the mods I have on (150).