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2x80mm passive exhaust good or bad?

TheMidnightNarwhal
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So front 140mm intake with side intake either 120mm or 2x120mm (single rad or dual rad) and the 2x80mm without fans, Will that make good airflow or  not?

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Airflow has to do more with where you place your fans than the number of them. 

Show a diagram and/or tell us what case you're using.

If you ever need help with a build, read the following before posting: http://linustechtips.com/main/topic/3061-build-plan-thread-recommendations-please-read-before-posting/
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Airflow has to do more with where you place your fans than the number of them. 

Show a diagram and/or tell us what case you're using.

 

Case is 250D. Already said which one was which in 1st post.

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Case is 250D. Already said which one was which in 1st post.

That works. It'd probably help to add in 80mm fans for intake though.

If you ever need help with a build, read the following before posting: http://linustechtips.com/main/topic/3061-build-plan-thread-recommendations-please-read-before-posting/
Also, make sure to quote a post or tag a member when replying or else they won't get a notification that you replied to them.

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That works. It'd probably help to add in 80mm fans for intake though.

 

But if I put 80mm intakes, where will the the air exhaust?

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But if I put 80mm intakes, where will the the air exhaust?

The single or dual rad is exhaust, is it not?

If you ever need help with a build, read the following before posting: http://linustechtips.com/main/topic/3061-build-plan-thread-recommendations-please-read-before-posting/
Also, make sure to quote a post or tag a member when replying or else they won't get a notification that you replied to them.

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No, it would be intake.

Don't exhaust hot air into your system. Turn them around. 

If you ever need help with a build, read the following before posting: http://linustechtips.com/main/topic/3061-build-plan-thread-recommendations-please-read-before-posting/
Also, make sure to quote a post or tag a member when replying or else they won't get a notification that you replied to them.

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Don't exhaust hot air into your system. Turn them around. 

 

But if I do that I get negative air pressure, and if I use fresh air it would cool my CPU better. I was thinking that the hot air goes in, and the 140mm pushes out into the 2x80mm.

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No, it would be intake.

A better option would to exhaust the hot air out the case to get optimal cooling for your graphics card.

I like the color scheme of Noctua fans. Deal with it. Forget about the bad memories of the past.


"wunder you really are as straight as a rainbow" - Lanoi "can I fisterino your nose" - WunderWuffle


Forget about the bad memories of the past, take the good ones along with you through the present, and look forwards to the good things that will come in the future.

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A better option would to exhaust the hot air out the case to get optimal cooling for your graphics card.

What he said^

If you ever need help with a build, read the following before posting: http://linustechtips.com/main/topic/3061-build-plan-thread-recommendations-please-read-before-posting/
Also, make sure to quote a post or tag a member when replying or else they won't get a notification that you replied to them.

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A better option would to exhaust the hot air out the case to get optimal cooling for your graphics card.

 

What he said^

 

 

Exactly, exhausting it throught the 2x80mm holes. If I use side I get neg. pressure, thus dust.

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@WoodenMarker @WunderWuffle So does passive 2x80mm exhaust good or really bad?

That's what I recommended.

If you ever need help with a build, read the following before posting: http://linustechtips.com/main/topic/3061-build-plan-thread-recommendations-please-read-before-posting/
Also, make sure to quote a post or tag a member when replying or else they won't get a notification that you replied to them.

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I thought what you ere recommending was side rad exhaust?

Both exhaust.

If you ever need help with a build, read the following before posting: http://linustechtips.com/main/topic/3061-build-plan-thread-recommendations-please-read-before-posting/
Also, make sure to quote a post or tag a member when replying or else they won't get a notification that you replied to them.

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Both exhaust.

Okay but what about having all intakes and 2x80mm passive exhaust? That way it's positive pressire. Can it work out well?

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Okay but what about having all intakes and 2x80mm passive exhaust? That way it's positive pressire. Can it work out well?

Just about any fan configuration will work but equal intake and exhaust performs the best. 

If you ever need help with a build, read the following before posting: http://linustechtips.com/main/topic/3061-build-plan-thread-recommendations-please-read-before-posting/
Also, make sure to quote a post or tag a member when replying or else they won't get a notification that you replied to them.

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  • 1 month later...

I have a very similar question for the 250D but with a somewhat different setup. I'm going watercooling but this question is more to do with the air aspect. I'll have a 240rad on the back side, a 120 rad on the front, block on gpu and cpu. One thought would be to run both as intakes so as to get cool air over the rads. But then you have large cfm dumping hot air into the case. I could put 2x80mm exhaust but the cfm on those wouldn't nearly match the intake fans. Another option would be to put both rads as exhaust, but it would be equally inbalanced for the intake. Is some sort of passive approach better? Or one rad as intake, one exhaust? Sort of banging my head thinking about all the possibilities. 

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