How do I know if it's already thermal compound on a cpu?

Gotland14

Honorable
Oct 24, 2013
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Are there some cpu's who already have thermal compound on them?

If it is, how do i know if a cpu already has thermal compound on it?
 
If you buy a complete PC, there should already be thermal paste on the CPU.

If you are buying a CPU in a retail box, the thermal paste is applied to the heatsink. You install the heatsink on top of the CPU.

If you are buying an OEM (not in retail box) CPU, there is no heatsink. You need to buy the heatsink; most come with their own thermal paste which you must apply yourself. The thermal paste should come with instructions.