intel extreme tuning utility undervolt i7 8750h

Plus, I understand that these setting aren't permeanent, so after each cold boot I will need to configure everything again?

Other people use ThrottleStop, but this seems much more complex to me (cache needs to be lowered aswell?). However, the 'Core Voltage Offset' parameter is missing here (see snap below), which is what the tutorials instruct you to lower by -0.050mv increments. I downloaded and installed the Intel Extreme Tuning Utility. I've found video tutorials online (and on this board) and many people seem to have has success lowering CPU temps using this technique.

I've never tried this before so need some help.

So I 'm thinking that maybe undervolting is the solution. Doesn't this effect my CPU's lifespan? And by disabling Turbo Boost I'm not really getting my money's worth, am I? (note: I keep my power plan on recommended when plugged in, not best performance) By default my machine is running over 3Ghz all the time even when not gaming. I assumed that by disabling Intel Turbo Boost I can reduce temperatures. The chassis become uncomfortable to touch because of the heat, even with a cooling pad underneath. I installed (CPUID HW Monitor) and saw that some cores were reaching the very high 90's. My new HP Omen gaming laptop with a Intel® Core™ i7-8750H Processor is seriously overheating while playing demanding games.

Intel extreme tuning utility undervolt i7 8750h