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Should my radiator fans be pushing air out or pulling air in?

post #1 of 4
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I'm not sure if it's better for me to have my fans on the radiator pushing or pulling.
My main concern is dust - not so much in performance. I'm fairly certain that given my hardware, the radiator will perform just as well both ways. Even so, I'm willing to lose a couple of degrees of temp for a cleaner case.

What I have now should be positive pressure, I'm pulling air from the top of the case into the rad, and after just a few months it's getting my radiator just filthy. Really, there's gotta be stuff living in there at this point, and it is impacting performance noticably.
I don't want to have to take apart the whole rad assembly to clean it every month or so.

I'm getting ready to buy some stuff for my PC and I want to get some fan filters.
Would it be a good idea to switch that side exhaust around to be intake - put a filter on it.
This way there would be no unfiltered air coming into the case (or at least not through the fans)

And then switch my radiator fans around to be exhaust - would I put filters on them too?
Would this be better or worse?


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post #2 of 4
Well look at it this way, heat rises and as such, even if you have exhaust fans, the temperature inside your case is generally going to be higher than the temperature outside.

Basic rule is.... The cooler the air blowing through your radiator, the cooler the liquid will be inside. If you can live with having to dust out your PC every now and then, I'd go for that option.
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post #3 of 4
If you want the top to exhaust, turn your rear fan to intake. Otherwise, your current setup is fine.
post #4 of 4
Have your rad be intake.

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