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Bottom Mounted PSU, fan facing Up or Down?Case is in carpet.

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litwicki24

Joined
Jul 1, 2012
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Hi everyone,

- PSU: FX XXX Edition Pro Modularny 80Plus Bronze - 750W (P1-750X-XXB9)

http://www.morele.net/zasilacz-xfx-xxx-edition-pro-modularny-80plus-bronze-750w-p1-750x-xxb9-554274/

- case: Centurion 590

http://www.coolermaster.com/case/mid-tower/centurion-590/


Question: Should this PSU be mounted with the fan facing UP, or Down, or it doesn't matter?

The PSU mounts on the bottom.

System is on carpet. Should i mount psu with fan up or down? My friend telling me that i must using psu with fan facing down. Case is Cooler Master Centurion 590. What now? I am confused. Its my picture of case.. HELP!
smile.gif


image.jpg
 
Matters absolutely none for functionality! Looks like there is a fair amount of room to still allow for sufficient air flow to the PSU fan if it were to face down. As stated you could add a filter if you are worried about dirt, or just install the PSU fan up and be done with it!
 
Ideally, you want the fan facing down, since it is the intake, if you have a bottom intake vent for the PSU (which your 590 does). This makes the PSU be a separate circulation system, that takes air from outside (cool), instead of sucking in warm air from your case, and exhausts it outside (warm). This is ideal, but not critical.

Like @suraswami said, get it up off the ground if there is no hard floor and airflow under the case. Also, you definately want a filter, of which you can find many different sizes at nearly all online retailers. Just measure the size in mm, since most will be listed like that.
 
Actually my psu is mounted with fan facing down. Case is on carpet. Its ok or its any risk to damage PSU because it is on carpet?
 
litwicki24 said:
Actually my psu is mounted with fan facing down. Case is on carpet. Its ok or its any risk to damage PSU because it is on carpet?
Click to expand...

Will not damage immediately, but slowly it will, because the fan will suck all the crap from the carpet and probably no room to breathe too.
 
If you HAVE to do it like that, then have the fan face upward. It's better for it to get warm case air into the PSU than almost no air, and full of dust and carpet fibers.
 
It looks like an area rug rather than wall to wall carpeting. In my experience area rugs don't shed that many fibers; I have my own case with a bottom mounted PSU near an area rug and have not had a large buildup of dust. When I had the case in a bedroom with wall to wall carpeting though, it got filled with dust very quickly. A filter, of course, is always a good idea, even if you have hard floors.
 
I have mine on board.Cause the carpet will shed some of it fibers to the screen. Keep the screen clean.
 
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But what if my carpet is clean, without powder and hairs. So then my case can be at carpet with psu with fan facing down? Its not dangerous?
 
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litwicki24 said:
But what if my carpet is clean, without powder and hairs. So then my case can be at carpet with psu with fan facing down? Its not dangerous?
Click to expand...
because its thick, it would affect the air that sucked to your psu
that the air will be less than normal air
 
It's like you putting a pillow over your face and trying to breathe. The PSU is the most critical part of your system, so please give it air.
 
Yes, something like that is much better! I see a clean, clear pathway to provide air to the bottom intake for PSU. :D
 
I have found somebody other pc from pcpartpicker.com and he has psu with fan facing down and on carpet. Its bad then ? Look:
image.jpg
 
rtwjunkie said:
Yes, something like that is much better! I see a clean, clear pathway to provide air to the bottom intake for PSU. :D
Click to expand...

Or, if you don't have any pets or children, or boisterous, drunken friends/relatives, leave the door off. Then you never have to worry about getting too hot in there. It will get dusty in there but..... dust conquers all!
 
Somebody told me:


"Face fan down:

PSU pulls air from under case and exhausts out the back, fan may be blocked by not enough air flow and could die."


So why many peoples have psus with fan facing down?
 
litwicki24 said:
Somebody told me:


"Face fan down:

PSU pulls air from under case and exhausts out the back, fan may be blocked by not enough air flow and could die."


So why many peoples have psus with fan facing down?
Click to expand...

Because as long as there is open space underneath the case, and the Case has an air intake opening for the PSU, this is theoretically the best position for the PSU, since it gets fresh air from outside and sends hot air out the back. In that case the PSU will not die a premature death.

Now, as I said, "theoretically", because the positioning is not a HUGE deal, as long as it is getting air. Being at the bottom of a well-ventilated case, if you wanted to have the fan facing up, because perhaps there was no open space underneath your case, then that is also fine, because the air it draws in is only going to be warm, not hot.
 
Ok finally . I want to ask you guys. Is here enough room for airflow to the fan in my psu? Here are the screens what is looking :

( first screen are my pc ) Is here enough room for airflow to the fan in my psu here?

image.jpg



centurion590.jpg



( second screen is not my screen, but position is like on my psu )
 
Do whatever gives you CLEAN and COOL air for PSU. WHATEVER! 1 centimeter or 1/2 inch is enough under the case to provide air. Stands, filters, upside/down, changing the Universe, killing animals, WHATEVER.
 
litwicki24 said:
But what if my carpet is clean, without powder and hairs. So then my case can be at carpet with psu with fan facing down? Its not dangerous?
Click to expand...

If youre going to set it on the floor get a wooden board or something. Your carpet is never really clean youll still get dust, hair, skin, insects, carpet fibers in there.
 
The most important question. Is here enough room for airflow to the fan in my psu? There is enough room under the case to provide air to PSU?

image.jpg
 
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eidairaman1 said:
If youre going to set it on the floor get a wooden board or something. Your carpet is never really clean youll still get dust, hair, skin, insects, carpet fibers in there.
Click to expand...

+1 I used a shelf I had laying around from a cheap bookcase for one of mine.

That said, I usually go fan up in my builds so it draws filtered air from inside the case and the psu components (pcb's, caps, coils, etc) aren't hanging upside down. The only thing you need to be careful of going fan up is dropping a screw in the psu :eek:
 
You tell us. Can you feel air? We've given you all the information, and you can do it either way. You make it however you are comfortable with.
 
fan up to suck air from the case. i had mine down, i used to use a fluffy ish table cloth and it used to get hot and shut itself off

if you can open the PSU and reverse the fan, it shouldnt be that much of a problem.
 
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