Cheat Engine

Localhost · Posted: Sat Mar 29, 2008 8:47 pm Post subject: Air Pressure inside Chassis

Okay...

I have 1x 120mm fan in the bottom front drive bay... (pulling in air)
I have 1x 120mm fan in the front side door... (pulling in air)
I have 1x 200mm fan on the top... (blowing out air)
I have 1x 120mm fan in the back top... (blowing out air)

Is this the correct air pressure inside my chassis? or should i change anything around?

PS i cannot change if the 200mm pulls in air or out...

Cheetah · Posted: Sat Mar 29, 2008 9:31 pm Post subject:

We don't know the CFM of the fans so I can't say. I will say this, in general you want negative pressure(more exhausting from the case than coming through the intakes) because it will create a suction and help prevent dust.

Localhost · Posted: Sun Mar 30, 2008 8:21 am Post subject:

I don't think i can find out the CFM, but from what i understand what you should said, i need more air intake fans than air output fans? I have the opposite right now Razz

...

Psy · Posted: Sun Mar 30, 2008 8:26 am Post subject:

Providing there is a constant uninterrupted airflow bam, then you should be fine.

As long air from the CPU and Northbridge area is getting out the case fairly quickly and swirling around somewhere.

Dust only settles when airflow becomes too slow or gets blocked. So of course, the better the airflow, the less dust should build up, which of course allows for better airflow. A leads to B leads to C...lol Smile

Localhost · Posted: Sun Mar 30, 2008 8:49 am Post subject:

Well i have airflow blowing on the Mobo and blowing onto the HDD...

After the air hits the mobo/HDD it will take the mobos/HDD heat...

Now we have hot air... Hot air rises...

Now i have a 200mm fan in the roof to take the heat out

That sound like a good setup?

PS :: After changing my side fan from Blowing out air to sucking in air... my temps went down 3 degrees celcius

Cheetah · Posted: Sun Mar 30, 2008 9:05 am Post subject:

You want more air leaving the case than coming in. I agree with psych that it's not terribly important for the flow of air, however I've noticed keeping negative pressure does lead to less dust buildup.

Psy · Posted: Sun Mar 30, 2008 9:14 am Post subject:

Yeah..

Obviously though, you can't physcially expel more air, then you take in....neither can you take in more air than you expel. Thats not possible, its the same amount.
Its all down to how quickly the air that gets taken in goes out.

More fans dedicated to the extraction of air also works the other way, as it drags air in through the other vents etc without the need of any other fans. Thats the suction effect.

Uber-1337 · Posted: Mon Mar 31, 2008 3:55 am Post subject:

@bam2550 is by any chance the case your using is the antec 900 gamin case?

Localhost · Posted: Mon Mar 31, 2008 4:33 am Post subject:

Yessir.

Psy · Posted: Mon Mar 31, 2008 4:58 am Post subject:

Its a nice case, designed for good airflow with standard stuff then in that case.