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Negative air pressure in case, how to solve?

post #1 of 6
Thread Starter 
Hi guys,

I'm having a problem with negative pressure inside my case, how do I change to positive air pressure?

Currently my setup:

- One 200mm fan at the front for intake (rotate at 730RPM, max speed).
- One 140mm fan at the back for exhaust (rotate at 1200RPM, max speed).
- Three 140mm fan at the top for exhaust (Two from H115i AIO cooler config for pull air through the radiator, one from pre-installed case fan rotate at 1200RPM max speed).

My case is Phanteks Enthoo Luxe, here is the supported fan configuration.



Should I replace 200mm fan at the front with two Phanteks PH-F140SP? Can I get any improvement?
Edited by LeonKennedy - 7/15/16 at 6:30pm
post #2 of 6
You have far more exhaust than intake. You should have more intake than exhaust.
     
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CPUMotherboardGraphicsRAM
i7-5930K Haswell-e Asus X99-E WS/USB 3.1 Visiontek Radeon 7870 2GB with 6 miniDisplayports G-Skill Ripjaws 64GB (8x8GB) DDR4 2133 
Hard DriveHard DriveCoolingOS
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Corsair AX760 Scratch built. Currently under construction at ... Logitech M525 El Cheapo Allsop hard plastic 
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post #3 of 6
Answered elsewhere.
Quote:
Simple
Replace the PH-F200SP with the back and top PH-F140SP fans

Problem is you have 4x 140mm fans exhaust and only 1x 200 intake. In ideal conditions with no resistance at all (spinning in open space) the PH-F200SP is rated 110cfm. while the 2x PH-F140SP are rated 82cfm each. That's a potential of 110cfm in and 164cfm out .. and we still have the 2x SP140L rated 49.5cfm with a potential of 99cfm to add giving us a whopping exhaust potential of 263cfm out. 2.6 times as much exhaust potential as intake!

2x PH-F140HP intake is a potential of 110cfm in to 2x SP140L exhaust potential of 99cfm.

Other options are
Add a 3rd intake in back (problem is air behind case is likely already warmed by warm air from GPU).
Remove PSU cover and use bottom intakes.
post #4 of 6
Thread Starter 
Quote:
Originally Posted by doyll View Post

Answered elsewhere.

I didn't think you are here too.

Thanks. biggrin.gif
post #5 of 6
Quote:
Originally Posted by LeonKennedy View Post

I didn't think you are here too.

Thanks. biggrin.gif
I spend more time here than over there. tongue.gif
post #6 of 6
Thread Starter 
Quote:
Originally Posted by doyll View Post

I spend more time here than over there. tongue.gif

Ok. tongue.gif
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