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[SOLVED] CPU "tube" (?) cooling

post #1 of 18
Thread Starter 
A while back I opened up a very old computer and found this plastic tube-thingy that brings cool air from a case fan directly to the cpu cooler. why are these not still used? i think my cpu could benefit from this.

trying to fnid a picture...
Edited by phillyd - 1/12/12 at 6:04pm
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post #2 of 18
Atrix%20CPU%20Shroud.jpg

Like this? I guess I can see the benefit to it. In my old case, I replaced mine with a fan. I found it worked a lot better.
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post #3 of 18
Shroud like thinggy right? keeps all air flow from a specific fan in a unified direction.
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post #4 of 18
I know what you're talking about and they're attached to the side panel. I never liked them as they have a tendency to become a dust collector and weren't always lined up well with the CPU. Seemed to be popular a few years ago as my ULTRA full size tower that I retired last year had it, but all of today's cases have fans that replace that.

There's a few cases like that at my work and they always have a layer of dust covering them. I'd rather have a 120mm fan there instead.
post #5 of 18
The problem with the design is the actual duct does not meet with the fan all the way, causing the fan to suck in the ambient air from the case interior. Most cases that feature these ducts do not have sufficient cross ventilation.

375

High performance computers feature sufficient cross ventilation with fans pulling air out in the back, and fans pushing air in from the front, thus eliminating the need for those ducts.
    
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post #6 of 18
P4's used them, well at least the gateway I had did. Not sure how much they help the temps though. Never really tested it.
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post #7 of 18
Wait! I currently have one of those. I never did check if it lies on top of the cpu fan directly. Now I feel tempted to check (my cpu is not in an accessible place).

So wait... I don't have any replacement fans. If I find out that it doesn't lie over the cpu hsf correctly, should I remove it? Or should I just let it be?
post #8 of 18
Thread Starter 
woah. yeah it was kind of like those but attached to the back of the case, and it was like a rectangular prism that had been bent twice, and had a filter. i never used it or the computer.
btw yall are seriously quick.
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post #9 of 18
Quote:
Originally Posted by Senorpie7 View Post

The problem with the design is the actual duct does not meet with the fan all the way, causing the fan to suck in the ambient air from the case interior. Most cases that feature these ducts do not have sufficient cross ventilation.
375
High performance computers feature sufficient cross ventilation with fans pulling air out in the back, and fans pushing air in from the front, thus eliminating the need for those ducts.

the reason these things are designed the way they are, insomuch that they do not provide a seal, is it would be a royal pain in the butt to pull off the side panel again if a tech needs to get inside.

however, if they reversed the design where you attach the chimney to the cpu fan, and can seal it when the side panel is on, it would be much better.
Edited by Captain Mayhem - 1/11/12 at 8:20pm
    
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post #10 of 18
Thread Starter 
Quote:
Originally Posted by Captain Mayhem View Post

the reason these things are designed the way they are, insomuch that they do not provide a seal, is it would be a royal pain in the butt to pull off the side panel again if a tech needs to get inside.
however, if they reversed the design where you attach the chimney to the cpu fan, and can seal it when the side panel is on, it would be much better.

the one i saw was attached to the back of the case on a hinge and latched onto the cpu cooler.
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