why do we need to apply paste on the CPU while removing the heat sink.please explain
- Thread starter akshay_24
- Start date
rmark45matsu
Reputable
- Aug 23, 2014
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Here we go, this article is very informative.
http://www.ebay.com/gds/Thermal-Paste-Compound-what-does-it-do-how-do-i-apply-/10000000001681689/g.html
http://www.ebay.com/gds/Thermal-Paste-Compound-what-does-it-do-how-do-i-apply-/10000000001681689/g.html
The paste dries up a little bit and thus you can not get a smooth surface on the heatsink.
The purpose of paste is because the cpu and the heatsink (or any solid surface really) is not perfectly smooth. The paste allows you to fill in these micro imperfections on both surfaces (kind of like waxing a car). Without this, the cpu would be different temperatures all over the chip and would cause poor heat transfer.
Since the paste dries a little, if you put the heatsink back on it would not be in the same perfect spot and would have poor heat transfer and likely overheat your cpu.
The purpose of paste is because the cpu and the heatsink (or any solid surface really) is not perfectly smooth. The paste allows you to fill in these micro imperfections on both surfaces (kind of like waxing a car). Without this, the cpu would be different temperatures all over the chip and would cause poor heat transfer.
Since the paste dries a little, if you put the heatsink back on it would not be in the same perfect spot and would have poor heat transfer and likely overheat your cpu.
microscopic means too small to see with the human eye.
imperfections in this case means that the surface is not flawless smooth. There is small little holes and pits in the surface of the cpu and heatsink.
The metal in these small holes would then not make good contact (cpu and heatsink) and thus be hotter and cause the cpu as a whole to be hotter and more difffiecult to cool
imperfections in this case means that the surface is not flawless smooth. There is small little holes and pits in the surface of the cpu and heatsink.
The metal in these small holes would then not make good contact (cpu and heatsink) and thus be hotter and cause the cpu as a whole to be hotter and more difffiecult to cool
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