But the fans will spin up like this when there is a fatal error with your system, you need to reset your bios options to default and run HWinfo logging when you are playing games or doing usual stuff to see if it picks anything up, what is your CP...
For conclusive proof that your CPU is throttling, open any CPU monitoring program likeOpenHardwareMonitororHWiNFOwhile putting your CPU under stress with either a CPU-intensive game or stress test like Prime95 and watch the temperature, power draw, and core speeds. ...