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A heatsink dissipates heat into the surrounding air and thus provides cooling.
20
votes
12
answers
15k
views
Does the paint colour matter on a heat sink?
Heat leaves a heat sink via conduction, convection and radiation. I was taught that black surfaces are best at radiating heat and correspondingly a lot of heat sinks are black. But they also have fi …
30
votes
7
answers
12k
views
Why aren't CPUs cooled from below as well as above?
The transistory bits of an integrated circuit are approximately in the centre of the (plastic or ceramic) package. They sometimes get hot, and we cool them by affixing a heat sink to one side. Somet …