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Subject:
Orientation of case fans
Category: Computers > Hardware Asked by: richardjmoss-ga List Price: $10.00 |
Posted:
04 Aug 2004 08:27 PDT
Expires: 03 Sep 2004 08:27 PDT Question ID: 383407 |
Hello, I've just bought a new computer case and front and rear fans for it. Now, this might be a silly question, but which way around should I have these fans - ie, if I have them one way, they'll suck air in, turn them around and they'll blow it out. I'm aiming for keeping the case as cool as possible. The rear fan is 120mm, the front fan 80mm. I hope this is sufficient information, if not please let me know. |
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Subject:
Re: Orientation of case fans
Answered By: bobbie7-ga on 04 Aug 2004 08:49 PDT Rated: ![]() |
According to the following forums regarding cases and cooling the front fans should be intakes, and the rear fans should be exhausts. Excerpt: ?How are your fans positioned? (..). Also, are the fans in the correct orientation? The front fans should be intakes, and the rear fans should be exhausts.? Source: Anandtech http://forums.anandtech.com/messageview.cfm?catid=37&threadid=1361045&enterthread=y ----------------------------------------------------- Excerpt: Ideal orientation of case fans ?I have 4 case fans, all cooler master. I was thinking, that you all are more experienced in cooling, so I ask you all: what?s the ideal orientation of the case fans? Should they blow into or out of the case? I have 2 in the front, 1 on top of the case, and 1 on the back, by the cpu cooler.? ?The two in the front should be intake and the other two should be exhaust. The best position for the two in front should be as low to the ground as possible.? ?Front and sides are intake...rear and top are exhaust? Source: Insanetek http://insanetek.com/forums/showthread.php?t=596 The best setup for a case is having cool air come in from the front and hot air expel from the back. See the diagram at the following link: http://www.tweak3d.net/tweak/airflowtweak/2.shtml You should have an intake in the front and one exhaust in the back http://www.techzonez.com/forums/archive/index.php/t-4636.html ?Fanning should be so that from bottom front of the case, there should be cold air intake, and from the back top (power) there should be exhaust.? http://www.techimo.com/forum/archive/index.php/t-90743.html Search criteria: Orientation of case fans Cooling case fans I hope this helps! Best regards, Bobbie7 | |
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richardjmoss-ga
rated this answer:![]() Prompt and valid information. |
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Subject:
Re: Orientation of case fans
From: omnivorous-ga on 04 Aug 2004 08:55 PDT |
Richard -- There's more than a little debate over this issue, which is one of the reasons that Microsoft has pushed for instrumentation in the PC to measure hot spots. What's clear is that airflow through the case should be uniform (no dead areas with active components) and that the processors themselves should have a heat sink and be in the main air flow. Here are two additional resources that are very good: EndPCNoise.com "Guide to Silent Computer Cooling," http://www.endpcnoise.com/cgi-bin/e/computercooling.html AMD "Athlon System Cooling Guidelines," (April 3, 2000) http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/cooling_guide.pdf Best regards, Omnivorous-GA |
Subject:
Re: Orientation of case fans
From: thegreatiam-ga on 13 Aug 2004 14:12 PDT |
One more concern is dust as well. You should have as many in the back blowing exaust also because if you are blowing air onto circuitry you are going to creat an air filter for dust and such and you will end up overheating anyhow. By removing air you are going to bring the focus on the environment and not just one spot. Thermaldynamics 101, crayon tactics use the tip to color a page or turn it on it's side and rub the whole thing down. |
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