Positive air pressure in case...

[TheNiceGuy]

I don't mean to sound crazy here, but no one has given me a fan setup for my case yet!
Currently, almost all the back panels are used, but only one front pannel is useed for a DVD RW.

 

[Navid]

Originally posted by: TheNiceGuy
I don't mean to sound crazy here, but no one has given me a fan setup for my case yet!
Currently, almost all the back panels are used, but only one front pannel is useed for a DVD RW.

The reason may be that there is not one solution that fits everybody's needs.

General:
Use a case that allows large fans. Cases are available that allow 120mm fans.

Be prepared to experiment!

Have resistors to insert in series with fans to drop RPM to reduce noise.

Learn how to test your computer for stability (memtest, prime95, ATItool, Motherboard Monitor, .......).

Consider after-market coolers. They void warranties though!

You can use a Dremel tool to modify the case if needed (add/enlarge fans, remove obstacles in the air flow path, ....).

Decide if you want to clean the case (and floppy and DVD drives) or the filters. Decide if low-noise operation is important for you. Whatever you do to reduce the noise of a fan (make it larger and drop its RPM), you can do for both positive and negative pressure systems. But, for the same cooling, you will end up with a quieter negative pressure system.

You can close an unwanted fan opening by tape or card board or, .... Don't decide just because there are more exhaust openings on your case than intake to go with a negative pressure system.

 

[Zepper]

I think my earlier reply pretty much covered it except you must either block off the CPU duct or add another intake fan between the duct and the door (with filter). It's a matter of just adding the fans per my earlier message and then tweaking the fan speeds with a fan controller until you get the result you want. Basically the total intake CFM must be slightly greater than the total exhaust CFM. And the air flow has to all be controlled by fans - there should be no (or as little as possible - to much hassle to caulk every crack and crevice) other way for air to get in or out. No one is going to know the magic combo for that case - you'll just have to experiment.
.bh.

 

[TheNiceGuy]

Thanks man

 

[BonzaiDuck]

That case design is fairly simple. Not a lot you can do to change it unless you want to cut on it with a Dremel. By looking at the link to the OWL case, I gather that you can either fit a 92mm fan to the lower front of the case? Or it comes with such a fan?

As to the CPU duct. I had been playing around with such a duct, hoping it would improve air-flow -- it did, to a certain degree, and it also increases noise to the case exterior.

At a risk of seeming too obsessed with "motherboard ducting", I believe the case design would be ideal for this sort of thing. The only question is "What is the orientation of the (interior)-"intake" fan of the Seasonic PSU?" The ducting would be easiest if the PSU intake fan is not located on the bottom and right next to the 120mm exhaust fan.

 

[AcidSun]

well i dunno if this will help or not but here is my setup

1 92 mm fan on the front for intake
2 120mm fans on the side for intake one over my cpu the other below my video card
1 92 mm fan on the back for exhaust
1 120 mm fan on the top for exhause
2 fans on the psu
and 1 fan the 900U on my CPU


my cpu temps went from 52 degrees (yikes) under load to 40 degrees c.

i used filters on all the intake fans, and grill son the exhaust fans. the setup makes my whole case so much cooler, best $40 mod i have done!