airflow restriction?

[Lithium381]

i've got a mount on the front bottom of my case, and it's got manufacture'd cut holes in it to alow air to go through, does this signifigantly decrease airflow? should i take some powertools to it?

 

[MrThompson]

Read this and learn link.

 

[Lithium381]

that's nothing but a pic....not much to be learned there

 

[MrThompson]

Sorry, I updated the link. I think you will find it a very interesting read on front panels and ventilation. I have tried this and it does work.

 

[ledzepp98]

by all means, cut that grill out...but if you don't use some sort of filter, you should clean the dust regularly. the power supply thing isn't really an issue with current cases since i don't think many (if any) have the power supply fan blowing into the case. on a side note, how old is that article? he has a k6-233 overclocked to 249, and he's "trying" to get it to 290...

 

[Lithium381]

yeah, that does seem kind of old, although the concepts will almost always remain the same. so yeah, i'll cut that thing out, and grab a filter....i'll probably in a few weeks dedicate a weekend to hacking my case up and putting in a few 120mm's, muahahaha, okay one should do, but yeah, mod time again. thanks for your input guys!

<edit>
also, so far i've got a 120 blowing in directly in on my cpu/agp....one 80 on top exhausting, an 80 on the back exhausting as well as the psu, i've also got an 80 in the front as an intake, is that enough or is there no air&quot;flow&quot; just pushing air around? input? advice? thanks
</edit>

 

[BrunoPuntzJones]

this is me personally, and no one has given me a definate answer, but i think it's better to have negative pressure in the case. more exhaust than intake. this makes sure that air is always trying to get in the case rather than the air inside trying to get out. if it's trying to get out it may be in a dead spot and be inefficient cooling. will have hot air lingering in the case. that's just my idea and i really wish someone would agree or disagree with it.

 

[MrThompson]

Use a foam filter. They don?t cut airflow much and keep things nice and clean. They also fit behind a front bezel without any problems. Note one of the principles in the article I referenced, you want the bezel intact without a big intake hole. Draw the air in from the sides and you will have better results. Once you have your fan in place, try the cardboard box trick mentioned in the article. You will believe it when you feel the increase in pressure from the fan.

Negative pressure allows unfiltered air to come into your box. Some of this will come in through your drives leaving harmful dirt behind. Positive case pressure, when done right, does not have any dead spots and avoids the dust problems.