is it ok to scratch the heat spreader on your cpu

[SwitchCraftH20]

I heard somewhere that scoring or scratching your CPU heat spreader in combination with a good heat sink and thermal paste improves temperatures and cooling performance is this true.

 

[clutchc]

That's a new one on me. Where did you see/read this at?
The whole theory of contact between heat spreader and heat sink is to have the best surface to surface contact as possible for best thermal exchange. That's why we use thermal paste. To fill in the microscopic voids in the metal surfaces to allow for better heat transfer. Scoring the surface would seem to only make greater, deeper voids to detract from heat transfer.

 

[CountMike]

Good grief, now I heard everything !!!
Quite opposite is true polishing surfaces to high gloss helps a bit. Every TIM has rating showing how much it detracts from heat transfer. Good ones start with 3 - 5W, medium over 10W.