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How to make a positive air within 800d

post #1 of 12
Thread Starter 
Ok so what i have is an idea of creating a possitive air presure in my build

what I have is:
Corsair 800d
8x CollerMaster 120mm fans with 69CFM
3 Stock Corsair 140mm fans(info on them unknown to me)
here is a picture of current flow
218
It will be for water cooling, so top is a rad 360,and I'm making it push/pull it will be 6 120m fans
one 140mm fan blowing into mid cage
one 120mm fan blowing on low cage
one 140mm blowing flow lower level into main chaimber of the case
one 120mm blowing air into lower chaimber
one 140mm rear exhaust fan
and a PSU 135mm intake with passive passing air outside
Questions:
First, how to make a positive pressure, cant get it in my head
Secondly, do I need change the stock(full cover) PCI slot covers into something like this
150
Thanks in advance
post #2 of 12
To create positive pressure in your case, you need more air going in than going out (more intake fans than exhaust). Not sure what your case looks like but mine has a vent next to the pci slot covers so that shouldn't matter.
post #3 of 12
Thread Starter 
Quote:
Originally Posted by ryan97145 View Post

To create positive pressure in your case, you need more air going in than going out (more intake fans than exhaust). Not sure what your case looks like but mine has a vent next to the pci slot covers so that shouldn't matter.

well it is corsair 800d, and i showed where fans located and where they currently directed, so if u might look at that please and make suggestions would be nice)) tanks for reply
post #4 of 12
I would say cut out the bottom 120mm spot and remove that fan simply because its not fast enough to supply both another fan of the same spec and the 140. Then if your gpus are water cooled flip the rear exhaust and make it an intake. If the gpus arent watercooled flip the 120s on the top and make them intake.
 
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post #5 of 12
Thread Starter 
ok, thanks, the fans on the right dont take much air from 120 in the mid, however, it is really pushing air through 140m,
but ill change them to higher CFM eventual somewhere 60CFM both rear and mid 140mm
so leave top 6 as out take? I mean my gpu and CPU will be water cooled...
and what i will install some sound insulation? will it collect dust?
post #6 of 12
remove all pci slot covers and cut out the rear grill either. much easier to push the air out of the case.
its worth it
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post #7 of 12
Top radiator as intake (it will provide a much better performance this way), the back fan as exhaust and the bottom one either way. Use the pci-e vented covers and you should be fine. If you want to avoid a dust nightmare, use some filters in the top.
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post #8 of 12
Quote:
Originally Posted by c5USSR72 View Post

ok, thanks, the fans on the right dont take much air from 120 in the mid, however, it is really pushing air through 140m,
but ill change them to higher CFM eventual somewhere 60CFM both rear and mid 140mm
so leave top 6 as out take? I mean my gpu and CPU will be water cooled...
and what i will install some sound insulation? will it collect dust?

Well since your gpus are gonna be cooled it makes it tough, either you can dump all that heat back into the case or have it go out. Personally I would test both ways just to be sure. I havent ever done a wc setup so I dont know if the heat output would have a large affect on the components cooled with blocks. I would think that it wouldnt be bad since they are cooled with blocks but depending on how far you want to push it I would get a block for the board as well. Again, I havent ever done a full wc loop so I couldnt give you experienced info on that.
Also you only have 3 going out, having 2 in tandem doesnt double the airflow so it will still be 207cfm total out (providing specs are right but since they are CMs I doubt it).
Edited by nagle3092 - 2/19/12 at 7:54am
 
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post #9 of 12
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post #10 of 12
Thread Starter 
Ok thanks a lot guys will let you know later this week whats happened)))
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