I have a brand new HP ProBook 450 G5. In BIOS Turbo boost and DPTF are on. When I am plugged in AC and stress test the CPU or benchmark it, the CPU temperature drastically increases to 90+ Celsius and after a couple of secs the CPU frequency drops from 3.4 to 2.6 the fan begins to work a bit more hard and the temperatures drop to 70-75 C and stay on that level. I guess the CPU is throttling. Should I worry or this is just the way this CPU works? The Intel CPU diagnostic passes and the benchmark points are right where they should be, compared with other's results. When I am on battery the temps do not exceed 60 C no matter what I do and how much I load the CPU. Thank you in advance for the shared opinions!