Fortron Saga 400 fan direction

February 3, 2010 at 05:48:32
Specs: Windows XP

I wanna ask you in which direction i should have my Fortron Saga 400. I noticed it is blowing air into case from factory-settings. I read a lot about it and i got it should sucks out from case hot air.

Question is, can i change direction of fan manunally ? I mean if there will not to be any probs with it ?

Btw. After i read this i got confused :

source :

,,One advantage of a power supply fan that blows into the case is that it provides much better control over the air that enters the system. Instead of being drawn in through all the holes and cracks in the case as with a fan that pushes air out the back of the system, the air entering the case all comes in from the power supply fan intake. This intake can be filtered to dramatically reduce the amount of dirt that accumulates within the system.''

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February 3, 2010 at 06:05:14
Are you 100% sure about the airflow direction? Very few PSUs introduce air into the PC case...the vast majority suck air from inside the case & exhaust it out the rear of the PSU.

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February 3, 2010 at 06:13:34
y Jam, im thats why im asking for help. I was also surprised about it, all additional fans 80 - front, side blowing in. under PSU only one 80 exhaust out. tested with soft paper (for sure :) )

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February 3, 2010 at 06:23:56
jan h

Your comments in #2 are not clear to me. Are you talking about additional case fans that are blowing in or some additional fans on the power supply itself?

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Related Solutions

February 3, 2010 at 06:28:05
OtheHill, im talking about additional fans on case. but question is up for PSU...:/

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February 3, 2010 at 06:46:18
"under PSU only one 80 exhaust out. tested with soft paper (for sure :) )"

So does this mean the opening under the PSU is exhausting air into the case? Is there also a fan at the rear of the PSU that is also exhausting air? If so, is there another grill elsewhere on the PSU that is allowing air to enter the PSU?

Where I am going with these questions is that I think you must be mistaken. The CPU fan moves a lot of air and that may be why you think the PSU is exhausting air into the case. Clarify if you will.

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February 3, 2010 at 10:07:04
I have 2 at back/rear of case. One is additional which exhausting, second is built-in which is on PSU and blows in.

Also i have additional 2. One In front of case blowing in and also at left side of coverage is next one which blows in.

And im confused about that one PSU which blowing in, it should exhausts too. Doesnt ?

Sorry for english :/

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February 3, 2010 at 10:28:35
Do you know the history of your computer and the components?

I have never seen a PSU that blew air into the case myself. Doesn't make much sense to me.

Are you having issues with the computer overheating?

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February 3, 2010 at 11:20:10
that psu i bought from shop like new one. It was in box with all things it. When i asked in shop why it is reversed they told me that it is not first time that manufacturer did it from their experience.

Today i changed fan direction to exhausts and problems with overheating went out. Finally, getting 50C in CPU & 40 Sys temp, stressed.

Quite amazing was thing that logo and everything on fan fits like it was on right place, now i have it all upside down. But works perfectly.

PS. Anyway tommorow im going to take up Seasonic S12II 500W and replace this one.

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