Desktops forum

Question

Positive or negative pressure system?

by firefivestar / May 8, 2013 11:09 PM PDT

so im getting a new case [apevia x-dreamer4-bl] and was thinking of what kind of ventilation i should choose. im aware the positive and negative aspects of both but im still uncertian. i have an image that has info on fans, cfm, airflow, ect. here. take a look at that and say what you think. the setup of the fans is uncertian simply because the huge gap in CFM for intake and exhaust for both setups due to the 200mm fan. Im also going to be getting a new PSU with a 120mm fan but i have not yet added that to the diagram.

Answer This Ask For Clarification
Discussion is locked
You are posting a reply to: Positive or negative pressure system?
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: Positive or negative pressure system?
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.

All Answers

Collapse -
Answer
Just sharing.
by R. Proffitt Forum moderator / May 8, 2013 11:39 PM PDT

I've used both over the years and can't see any clear winner.
Bob

Collapse -
reply
by firefivestar / May 9, 2013 9:05 AM PDT
In reply to: Just sharing.

im thinking more towards a positive pressure system but now the problem that faces me is the fact that there is 5x more air going in than out. i would assume its not good to have too much pressure simply because there wouldnt be enough air leaving to give it good flow so im thinking maybe about spinning some fans and doing more of a 100:250 CFM setup instead.

Collapse -
Are you attempting the old all fans in or out idea?
by R. Proffitt Forum moderator / May 9, 2013 9:13 AM PDT
In reply to: reply

It's your choice in the matter. Old school is to exhaust at the top and pump in somewhere else.
Bob

Popular Forums
icon
Computer Help 49,613 discussions
icon
Computer Newbies 10,349 discussions
icon
Laptops 19,436 discussions
icon
Security 30,426 discussions
icon
TVs & Home Theaters 20,308 discussions
icon
Windows 10 360 discussions
icon
Phones 15,802 discussions
icon
Windows 7 7,351 discussions
icon
Networking & Wireless 14,641 discussions

Tech Tip

Stuck without Internet and want to watch movies?

CNET shows you how to download movies and TV shows onto your device using Amazon Prime so you'll always be entertained.