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Negative, neutral or positive air pressure - Page 2

post #11 of 18
Thread Starter 
Quote:
Originally Posted by Korlus;12087339 
My favourite is (slightly) positive pressure (more air going in than out, provided by fans). Why?

Well, I have dust filters on my intake fans. That means that the air going through them will (hopefully) be relatively dust free. That means that hopefully air will be expelled from the excess mesh I have on the case, and ought to keep more dust out.

Conversely, were you using a negative pressure on your case AND had meshed areas, I assume that there would be more air being drawn in through there, and over a few months, the dust buildup would be marginally higher than otherwise.

Is there a huge difference? Not really. It's all down to personal preference.

the front of my case is mesh

the case is a antec 100 btw but the front fans will cover the bottom front
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post #12 of 18
This is a very good explanation: http://www.silverstonetek.com/tech/wh_positive.php

Attachment 191380

Edited by tw33k - 1/21/11 at 3:30am
post #13 of 18
Quote:
Originally Posted by tw33k View Post
Ah my beautiful FT01

I'm a fan of positive pressure ever since I got my FT01. Used to have an Antec900 with rigged dust filters and man that thing still got dusty as hell. Every couple of weeks it was dusting time, drove me insane. I had negative pressure then and tbh didn't know.

Fast forward to my FT01, almost zero dust other than what still slides through the filters as no fan filter is absolutely perfect.

The advantage of positive pressure: You can set up your airflow path better [since there will be no extra air getting sucked in], much... much less dust [air will escape through any nook and cranny, not rush in, so dust does not get pulled in through your front 5.25" bay slits and what not].

Also, imo, the cooling performance is much better. On my antec900 I had my older 4870 rev up constantly due to heat... not once with my FT01, and I had the side panel fan, two intakes, who whole nine yards on that antec with no avail. 75C at max load, with 45% fanspeed on my current GTX470 must mean something too, this card was supposed to be a toasty one, seems not

My brother has a CM Sniper... it's fun asking him if he dusted yet
    
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post #14 of 18
Thread Starter 
positive pressure it is

p.s can dust filters be bought separatly because they didnt come with my case -.-
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post #15 of 18
I have a Storm Sniper and have next to no dust

Quote:
Originally Posted by Munkypoo7 View Post
Ah my beautiful FT01
That's where I got that pic! Well done and thanks. (fixed)
Edited by tw33k - 1/21/11 at 3:31am
post #16 of 18
Thread Starter 
edit on my first post

im going with no mod for now just the 140mm at the top only..
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post #17 of 18
i ussaly try to keep it neutral, but my current setup unless i turn my rad fans down is way negitive.. i only have 1 fan for instake, all my top rad fans are exhaust and the read is exhaust
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post #18 of 18
Positive pressure is preferred. Less dust, more cool fresh air coming in results in better cooling.
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