Thermal Compound?

Thermal compound is used to make a good thermal junction between a CPU and the heatsink for better heat transfer, if you are using the stock heatsink that comes with your processor it will come with some pre-applied. If you are using an aftermarket heatsink, it will likely come with some that you will need to apply.
 

anhtice

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May 20, 2011
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if you are going to get an aftermarket cooler, get a compound too. I believe a better/good thermal compound is more effective than a better chasis fan over a regular one.

get artic 4 if you are, that lasts for 8yrs, longer than the depreciation of a machine.