Noctua NT-H1 Thermal Grease Review
 

As always, thermal grease plays a very important role in keeping your CPU cool as the heatsink and fan do. Thermal grease/compounds allow you to run your CPU a few degrees cooler. Choosing the right brand of compound is the key.

http://www.bayreviews.com/computers/...thermal-grease

Sorry, but the key to what? if you system's stability is determined by a difference of a few degrees, something else is wrong.