Hi. i have 2600x clocked to 4050mhz. i used 1.3125V. When i am playing games.( 44 degree celcius cpu) i get random core 1 spike to 100%. My fps drops a little for like 2-3 seconds and after in like 5-10 sec evrything is going back. Mention: temps don't modify and only cpu1 is spiking 100%, rest are intact. i switched 1.325V since i though it;s a voltage problem (gotta test it out).