I just spread it very thin on the surface, until it covers the entire thing. The important thing is that it covers the entire area of the processor. With my experience, as long as you only use a reasonable amount it should be fine, and it really doesn't make much of a difference how little you use. Stay within reason however, :P
Originally Posted by foothead
It could be even cooler though.
Mine never got over 45C on stock in a prime95 test.
I much prefer Intel Burn Test, got me higher temps then prime95 ever did.