I havent used realtemp but Ive used Speedfan, HWMonitor, my MOBOS software to monitor, Coretemp, almost all the good ones, also AMD OD whice gives me the most accurate "thermal margin" reading which is always much higher (thermal margin, higher is better, thermal margin in the temp until throttle or shut down and my APU is rated for 74C and when my MOBO says my temp is 60C, my thermal margin on AMD OD is 65C which means my CPU is only 10C) IDK.. but those are the facts