Water cooling systems appeal to people who push the envelope and build personal computers with the fastest chips, because water cooling is very efficient. They also eliminate large, noisy fans.

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In this design, the cooling process happens naturally: as the CPU heats up the liquid in a special block, the coolant evaporates and moves up through pipes toward a radiator with two 120 mm fans.

That’s why nearly all hot ends have some sort of fan cooling. However ... and this can tax the normal cooling system. That causes clogs and the water cooling is much more efficient.