PC Hardware forum

General discussion

chassis fans

by fireguyinont / November 10, 2006 6:45 PM PST

1. Are chassis fans to blow in or suck out air?
2. Are cpu fans to blow or suck?
I just replaced my fans and I am just making sure I put them in the right direction.
Thanks

Discussion is locked
You are posting a reply to: chassis fans
The posting of advertisements, profanity, or personal attacks is prohibited. Please refer to our CNET Forums policies for details. All submitted content is subject to our Terms of Use.
Track this discussion and email me when there are updates

If you're asking for technical help, please be sure to include all your system info, including operating system, model number, and any other specifics related to the problem. Also please exercise your best judgment when posting in the forums--revealing personal information such as your e-mail address, telephone number, and address is not recommended.

You are reporting the following post: chassis fans
This post has been flagged and will be reviewed by our staff. Thank you for helping us maintain CNET's great community.
Sorry, there was a problem flagging this post. Please try again now or at a later time.
If you believe this post is offensive or violates the CNET Forums' Usage policies, you can report it below (this will not automatically remove the post). Once reported, our moderators will be notified and the post will be reviewed.
Collapse -
Typical operation
by Willy / November 10, 2006 9:19 PM PST
In reply to: chassis fans

This is typical, but yiu should have noted how *your fans* were ordinated. Front chassis fans, blow-IN, rear fans, blow-OUT. HSF, usually blow-ON or down onto the cpu. However, if you have no directly mounted cpu fan, and is off or mounted elsewhere, usually that implies its trying to blow-OUT the chassis when connectewd to some sort of wind tunnel. When you look at fan blades themselves directly, they are usually blowing towards you. In better fans, a decal or embossed air shows the direction of flow.

tada -----Willy Happy

Collapse -
Chassis fans and direction of air flow
by VAPCMD / November 11, 2006 1:07 AM PST
In reply to: chassis fans

1. Chassis fans should be oriented to bring in outside air through the front (and sometimes the sides) and to expel component-heated warm air out the back (and sometimes the top).

2. CPU fans are generally oriented to force air downward over the HS to dissipate CPU heat. However there is at least one formerly prominent HS mfg (ALPHACool) that specified just the opposite for their units.

3. And it you look very carefully ...you?ll almost always find two arrows embossed on the outside of the fan showing the direction of fan rotation and direction of the airflow.

Here?s a great link for more info about this subject

http://www.heatsink-guide.com/

VAPCMD

Popular Forums
icon
Computer Newbies 10,686 discussions
icon
Computer Help 54,365 discussions
icon
Laptops 21,181 discussions
icon
Networking & Wireless 16,313 discussions
icon
Phones 17,137 discussions
icon
Security 31,287 discussions
icon
TVs & Home Theaters 22,101 discussions
icon
Windows 7 8,164 discussions
icon
Windows 10 2,657 discussions

FALL TV PREMIERES

Your favorite shows are back!

Don’t miss your dramas, sitcoms and reality shows. Find out when and where they’re airing!