Does laptop performance decrease if I don’t reapply thermal paste ?

glennjohn

So my laptop was given to a service center because of board complaint. Now everything is fixed and the performance of the laptop during casual use and gaming is laggy at times. I checked everything. Ram is okay (16gb), ssd is fine. But then they told me that they haven’t reapplied the thermal paste after removing the heat sink from the mother board. So I wanna know should I reapply thermal paste and will I get the old performance back if I do.

GAMING6698

@glennjohn
If you are using bad thermal paste, temperature will increase and system start throttling to protect components.

I suggest you to apply new thermal paste, 
I recommend you to use thermal grizzly kryonaut

All over the forum people are re-pasting because the factory thermal paste is inferior to what you can get on the market today. This is the case with nearly ALL laptop brands. Take your pick.
Hundreds if not thousands of people successfully repaste laptops every year. In fact, manufacturers now offer "performance" thermal paste as an upgradable option because they KNOW people want more thermal conductivity and lower temperatures on premium laptops.