Positive pressure in corsair 350d

[Gutberto]

I am buying the same case, but not the same coolers you have. I am planing to use 2 SP120 quiet edition as intake and 1 af120  (Not sure if u should buy the performance edition or the quiet edition as the 2 on the front)  My question is, will i have positive pressure

 

if i add an H100i on the top with the 2 fans as exhaust?   I know that if i dont add the h100i i will have positive presure :v  But, what about the rad?  Also, what if i add a 120mm rad with exhaust fan instead the H100i? will i need another exhasut fan on top for positive pressure?  

 

Will push-pull worth as exhaust instead using only exhaust fan?

 

 

Thank you all

[b1aze]

I really think this whole idea of "positive pressure" is pretty silly considering how every single case people are talking about is not sealed by any means. Yes, you have more air going in than directly out based on CFM of fans alone, but i hardly believe you are generating even a few mmHg of pressure differential, which is negligible really. You honestly want to move air from outside into the case and then back out of the case once it gets warm enough (or cools the components, whichever way you look at it).

 

I personally have a Corsair 350D with 2x 120mm fans exhausting out the top, 1 120mm fan exhausting out the rear and my H80i as a front intake with a second 140mm fan below it. It is technically a "negative" pressure setup but i really still dont think youre generating pressure differential of anything substantial.

[Gutberto]

I really think this whole idea of "positive pressure" is pretty silly considering how every single case people are talking about is not sealed by any means. Yes, you have more air going in than directly out based on CFM of fans alone, but i hardly believe you are generating even a few mmHg of pressure differential, which is negligible really. You honestly want to move air from outside into the case and then back out of the case once it gets warm enough (or cools the components, whichever way you look at it).

 

I personally have a Corsair 350D with 2x 120mm fans exhausting out the top, 1 120mm fan exhausting out the rear and my H80i as a front intake with a second 140mm fan below it. It is technically a "negative" pressure setup but i really still dont think youre generating pressure differential of anything substantial.

 

I get it, but let me ask and be honest, how dirty or dusty your pc is? Mostly the intake fans and all the holes like pci-e covers or 5 1/4 inch bays

[b1aze]

I get it, but let me ask and be honest, how dirty or dusty your pc is? Mostly the intake fans and all the holes like pci-e covers or 5 1/4 inch bays

Not dusty at all but I also keep my tower on top of my desk. I actually just switched cases after 1year+ in a worse case and I was very happy with the dust levels in my old case.