Quote:
Originally Posted by banditpowdercoat
Ohh, if they use water for cooling, t hat I can see, but my 2 externals don't use water for cooling. The mag, yes, its submersed. only 43w though, wouldnt have thought that would be enough, but maybe huh.
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Water still forms a jacket around the impellers of the external pumps thereby transferring heat. Not as much as an internal pump, but there is still heat transfer.
Mags are infamous for being heat generators.