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Push/Pull with (x2) 200mm fans on top, and (x2) 120mm fans on bottom?

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June 16, 2014 7:40:02 PM

Got a new case, and was wondering if it is ideal to do a push pull on a rad with two 200mm fans on the top pulling air, and the two 120mm fans on the top pushing, or should I get another pair of 120mm's for the top instead of the two 200mm?
June 16, 2014 7:47:35 PM

What radiator do you have that supports 200mm fans?
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June 16, 2014 7:49:18 PM

Are you sure you want push pull? It's gonna be loud for minor gains of maybe a couple degrees. I've considered that myself and just the 2 120mm are kinda noisy at heavy load so I got me a pair of decent headset..
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June 16, 2014 7:51:13 PM

ksham said:
What radiator do you have that supports 200mm fans?


I'm thinking he's gonna mount the 2 120's on rad inside and have the 200's screwed into case. Right?
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June 16, 2014 7:51:32 PM

ksham said:
What radiator do you have that supports 200mm fans?


I have an H100i, and for my case I can add two 200mm on the top of the case, right above the radiator, and then the 120mm will be hooked inside the case, under the rad.
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June 16, 2014 7:56:24 PM

Memhorder said:
ksham said:
What radiator do you have that supports 200mm fans?


I'm thinking he's gonna mount the 2 120's on rad inside and have the 200's screwed into case. Right?


correct
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June 16, 2014 7:58:28 PM

Does your case have dust filters?
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June 16, 2014 8:00:38 PM

Memhorder said:
Does your case have dust filters?


Yes. A ton of them. The new case I got is the Thermaltake V71
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June 16, 2014 8:05:10 PM

It could lead to performance issues if the 200mm on top (most likely) pulling out more air than the small 120mm will push through. At the same time, the 200mm isn't pulling the air out as focused as the 120mm.
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June 16, 2014 8:08:54 PM

Oh yeah. I was just concerned about even air flow (pos/neg) but with the 2 200mm fan on the front and the 120's on bottom feeding fresh air that won't be an issue. I don't see why you couldn't do the push/pull it would work but again it will be loud
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June 16, 2014 8:12:33 PM

ksham said:
It could lead to performance issues if the 200mm on top (most likely) pulling out more air than the small 120mm will push through. At the same time, the 200mm isn't pulling the air out as focused as the 120mm.


very true.
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June 16, 2014 8:12:56 PM

There will probably be large gaps around the rad so the 200's will extract air from rad and around it
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June 16, 2014 8:22:24 PM

What's the intake?
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June 16, 2014 8:35:27 PM

Karadjgne said:
What's the intake?


the x2 120mm fans.
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Best solution

June 16, 2014 8:40:21 PM

After experimenting on my desk fan, here is my conclusion. Yes it will work. No it won't work well. The problem lies in the fans themselves. If you try running the fans off the same source, the 200's will be spinning T the same speed as the 120's which is going to make them ungodly loud, like freight train loud. So, you'll have to separate the feeds, slowing the 200's down. You'll have to do this anyways even if the intake is dual 200's or you'll get a negative pressure in the case, dust vacuum! Also there is the matter of focus. The 120's pushing air through a rad will focus the air somewhat. And that focused air will be hitting the backs of the slower moving 200 blades making a chopping sound. Blow on a moving fan, you'll understand real quick. Either way, it'll work, but I'd not want to live with all that noise for so little gain.
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June 16, 2014 8:44:28 PM

Karadjgne said:
After experimenting on my desk fan, here is my conclusion. Yes it will work. No it won't work well. The problem lies in the fans themselves. If you try running the fans off the same source, the 200's will be spinning T the same speed as the 120's which is going to make them ungodly loud, like freight train loud. So, you'll have to separate the feeds, slowing the 200's down. You'll have to do this anyways even if the intake is dual 200's or you'll get a negative pressure in the case, dust vacuum! Also there is the matter of focus. The 120's pushing air through a rad will focus the air somewhat. And that focused air will be hitting the backs of the slower moving 200 blades making a chopping sound. Blow on a moving fan, you'll understand real quick. Either way, it'll work, but I'd not want to live with all that noise for so little gain.


Best answer selected by Karadjgne!
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