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?
Solution
Memhorder
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- Jan 10, 2014
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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
- Dec 26, 2012
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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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