If anyone has the equipment…maybe test out how flat the contact plate is of the CPU heatsink. Something like what’s done here:
Mounting pressure on laptops can’t (typically) be as high as that of desktops, so to get the best thermal transfer of any contact made, flatness is even more of a key factor in laptops. Ideally, as flat and as polished as the die.
Doesn’t have to be as precise as these examples:
And definitely doesn’t need to be this flat:
