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Side Fans: Suck or Blow?

Original Message
Name: Deathlyphil
Date: April 25, 2007 at 06:35:46 Pacific
Subject: Side Fans: Suck or Blow?
OS: 2003 Server / Xp Pro Sp2
CPU/Ram: AMD 3000+ 1024MB
Comment:
I'm considering buying a side fan for my computer. I already have 2 front mounted ones and 1 rear mounted fan. I know that the airflow should go from the front to the back of the case, and the fans are set up in this way.

My question is this: is a side mounted fan sucking air into the case, ie blowing cold air onto the motherboard, or is it blowing hot air out of the case?

Thanks


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Response Number 1
Name: Pariah
Date: April 25, 2007 at 09:43:24 Pacific
Subject: Side Fans: Suck or Blow?
Reply: (edit)
In these forums people will most likely tell you NOT to have a side fan. If you are adamant on one. I don't think it matters whether it sucks or blows. FYI, mine blows.

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Response Number 2
Name: landon
Date: April 25, 2007 at 11:58:19 Pacific
Subject: Side Fans: Suck or Blow?
Reply: (edit)
I have a case with a 4" fan in the rear and I have checked it both ways, blowing in and blowing out, and can tell no difference in the temp.
It has a side fan and I removed it and still no difference.
I can tell a little difference in temp if I leave the side panel off as I do a lot while changing things inside but that is only a couple of degrees C.
My cpu runs from 32 to 38 C depending on the temp of the room. The cpu is the Lima 2.4 Ghz.
I had another computer that I installed a side panel of plexas(?) glass with a hole directly in line with the cpu. I put a fan and a funnel directed straight into the cpu fan and it lowered the temp about 5 degrees C. That was with a 2.4 Barton which ran in the 40's.



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Response Number 3
Name: jam
Date: April 25, 2007 at 12:45:56 Pacific
Subject: Side Fans: Suck or Blow?
Reply: (edit)
Rear fans should blow out (exhaust), front fans should blow in (intake). Side panel fans are generally disruptive & should be avoided.

AMD recommends a rear fan only.

http://www.computing.net/hardware/w...


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Response Number 4
Name: Cobra_R
Date: April 25, 2007 at 14:45:22 Pacific
Subject: Side Fans: Suck or Blow?
Reply: (edit)
Jam is 100% right.

All you needs is one 120mm front fan and one 80 or 92mm back fan. Side fans can disrupt the air flow current.

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