Airflow Pressure: +, -, =

[CowsGoRoar]

My Thermaltake Overseer RX-I has a Thermaltake Pure 20 LED, which is 800 RPM, and the top is 600-800 RPM and the original front is the second top which is 600 RPM.

My rear fan is now the bottom fan and it taken by a liquid cooler.

 

Either way, this creates a negative air pressure. Some other forums have talked about it, and they both have pros and cons. Obviously equal is the best. But not all cases have equal fan sizes and speeds.

The case has dust filters everywhere, so dust isn't a problem.

 

All I want to know is: what's YOUR case air pressure? +, -, or =?

[LawrenceBarnes2013]

Non, Test Bench

[CowsGoRoar]

Non, Test Bench

How often do you clean your room? I don't want a PC to be a dustbunny.

[wtfxmitchell]

mine is -

 

1x 140mm intake

2x 140mm + 1x 120mm exhaust

[Ex0Thermic]

Positive air flow using dust filters on intakes to keep the inside off my pc clean

[Rorgash]

positive all the way, 1 exhaust in the back, much more actual precision airflow from intake, which i like and there is enough holes in the chassi for it to leave again, and fan filters on all intakes keeps it clean.

 

and negative pressure means it will take air from anywhere which could be just next to the fan meaning nothing got taken from inside the case, and its much harder to cover with dust filters when the air will be coming in form every tiny hole in the case.

[LawrenceBarnes2013]

How often do you clean your room? I don't want a PC to be a dustbunny.

i have nothing in it but my PC my closet and my bed, the window never opens so no dust comes in, and i clean my Room like every morning, but i guess there isn't much to clean

[Joshua Ondangan]

this is how I went with him.

 

 

140mm exhaust, x4 120mm ap121 exhaust (one of these is intake), x3 120mm ap120 exhaust, another x3 inside ap120 taking air from the front and inside the gpu area.

 

x4 ap120 120mm intake and a x2 ap121 120mm exhaust (bottom)

[Tea1337]

Positive pressure is best for keeping dust out of your PC

[Joshua Ondangan]

i have nothing in it but my PC my closet and my bed, the window never opens so no dust comes in, and i clean my Room like every morning, but i guess there isn't much to clean

you must live in a nice place my friend.

 

 

my place I clean out regularly = still those little fucking dust makes their way to my house and pc TT____________TT with all those dust filters. lol this makes me think putting dust filer on my windows and doors might make a difference.

[tS_kStin]

+ for me. 4x 120mm intake (2 on a rad), 1x 120mm and 2x 140mm exhaust (2 on a rad)

[LionsGoMoo]

Just a single 92mm fan in the back with vents on the side.

It's fine though, the i5 750 stays no higher than 70 C and the GPU doesn't go more than 54 C.

[aidenrelkoff]

positive or negative, your choice.

 

do you want to be blowing dust in or sucking(no innuendo intended)it out?

[flibberdipper]

Once I get all of my fans replaced, every fan in my case will be blowing in except the PSU fan. So super positive.

[LogicalDrm]

I have pretty much equal. 1x200mm as intake, 1x120mm and 1x140mm as exhaust. all running at 7V. No problems with dust. I clean my appartment maybe once in 2 weeks.