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Is there such a thing as too much positive air pressure ?

  • Gtx
  • Fan
  • Corsair
  • Components
Last response: in Components
December 7, 2013 5:13:37 AM

So I've almost got all the parts for my new build. Im trying to decide on the best fan setup. My case is a Corsair 400r. I'll have a total of 5 intake fans(2 front, 2 top, 1 bottom)All 120mm. The only exhaust fan I currently have is through the radiator of my h60, which has a push/pull setup with 2 120mm fans.
I have a couple of fan slots open on the side of the case for 140s or 120. Would it be better to change the top two fans to exhaust, and use the open slots on the side as intake ?
My build is a 2500k(which will be OC'd) with a gtx 580 3gb. MSI z77 mobo, 8 gskill 1600 ram, 120g ssd, 1tb storage drive, and a cd drive. PSU is an EVGA SuperNova 750g Gold

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December 7, 2013 7:56:59 AM

Dont bump threads, especially as the thread was only 30min old when you did.

I would flip the top fans to exhaust. Quite simply hot air rises, so having those fans pushing it back down makes no sense to me. Front and side panels intake air, rear and top exhaust. That will set up your basic front to back airflow and aid convection.
December 7, 2013 8:12:53 AM

Ok, that makes sense. The reasoning behind my using the top for intake was to have cold air coming in as close as possible to the radiator, which imho, would help keep cpu temps down.
So i guess that brings up the question of should i have the radiator on an intake instead of an exhaust, or would it make much of a difference ?
December 7, 2013 8:28:45 AM

If you have a radiator as an intake, the CPU will get better temps but everything else will suffer as your blowing hot air into the case. Other way around if you have it as the exhaust.
I would set it up as an exhaust, there are components on the motherboard that also need to stay cool that dont have a fan blowing directly on top of them, so having heat dumped into the case isn't a good idea.