For thermal grease skills, the more detailed the better
But this is not possible, the metal lid heat sink and CPU looks smooth, but with a magnifying glass, you can see many holes in metal surface concave stripes and irregular tunnel, lead contact surface with many gaps, these gaps are impeding heat dissipation, thermal grease is liquid, can fill the gaps. Improved radiating surface contact, the heat dissipating effect than when there is no good thermal grease. But if the thermal grease is too thick, it will become a film on the contact surface of the middle, but hindered the direct contact of metal, worse than not coated with thermal grease.
The best way is to let the thermal grease coated metal can directly contact, and can be a very good filler metal surface those small potholes, this effect is the best.
If the fins and the metal cover of the CPU are as smooth as mirrors, they will be 100 percent fully exposed to the best thermal conductivity.
