do i need a dust filter for the exhaust fans?

andrewkim9711 · Jan 15, 2014

I want to know if i should install a dust filter on the exhaust fans such as the one in the rear of the case where the motherboard IOs are, and on the top where usually 2x 120mm fans go in, in the CM 690 III cases, for an example.

http://www.coolermaster.com/case/mid-tower-cm690-series/cm693/

i know that dust filters are only necessary for the PSU and some intake fans, but just in case i want to install a dust filter on the exhaust since dust will go in once the fans are not running.

would there be any performance disadvantages of having a dust filter?

13thmonkey · Jan 15, 2014

intake only, not on extract, so not on psu, unless it is upside down and pulling from the underside of the case.

andrewkim9711 · Jan 15, 2014

13thmonkey :

The CM 690 III case comes with a built in dust filter for an optional 120mm fan and for the PSU.

the psu is going to be faced down with the fan facing down, so i don't have to worry about that right?

and does the PSU take in air or take out air? i'm confused of how the psu fan works.

13thmonkey · Jan 15, 2014

PSU in your case will suck in from the bottom and out through the back, so the built filter should be ok, personally I'd suck from inside to give it more air to work with as any carpet will minimise airflow to a temp sensitive component with no monitoring.

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do i need a dust filter for the exhaust fans?

andrewkim9711

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andrewkim9711

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13thmonkey

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