In message , Paul
writes:
[]
Where the fan blows down onto the heatsink, the
dust will be near the top of the heatsink. A
[]
What proportion of such fans blow onto the heatsink, as opposed to
sucking off the heatsink - about 50-50, or is one type much commoner
than the other?

I know "clean box" cabinets tend to operate under positive pressure,
which is counter-intuitive (though does make sense when you think it
through), but there the concentration is on air filtration, rather than
cooling.

JPG


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