how do you know if your CPU is working properly? what are the symptoms of a dieing CPU? iv been getting low fps and my polling rate goes over 2k hertz. iv been trying to diagnose the problem and iv come to the conclusion that it has to be either my power supply or my CPU, but im not sure which one. i get lower than 100 fps on league of legends sometimes and 30-40 fps on the amazing spiderman 2, and i have a fx 8350 gtx 770 asrock 970 extreme 3 rev 2.0 cx600 and 8 gigs of ram. its not anything else because iv test and replaced everything so its either my CPU or my power supply but im not sure which one.