Too much thermal grease is a barrier to heat, because it should only replace the air (a potent thermal insulator) between uneven surfaces. Oil would be better, but that runs away.
Which is also why you shouldn’t smear the grease, because then you get air pockets. Rice corn or spaghetti method displaces the air on putting the cooler on.
The only thing too much thermal paste does is leave a mess, but you might need thermal pads on VRMs for better contact
Too much thermal grease is a barrier to heat, because it should only replace the air (a potent thermal insulator) between uneven surfaces. Oil would be better, but that runs away.
Which is also why you shouldn’t smear the grease, because then you get air pockets. Rice corn or spaghetti method displaces the air on putting the cooler on.
I’m not familiar with those methods and “rice corn or spaghetti” makes me think you boil the the paste first