Hello! I have recently installed Windows 10 on an old PC and noticed something strange. Can someone please explain to me why task manager is showing that my CPU ( Intel Pentium E5200 with a base speed of 2.5 GHz) is running with a base speed of 15 GHz and current speed fluctuates well above 10 GHz. That is at idle with nothing running. Although core temps are at 40-ish degrees it feels rather unsafe. Not sure if I'm missing or not understanding something, but is there a way to limit CPU speed ?