Backplate and 5.25" Drive Fans

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Jake Wenta

Jake Wenta

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Mar 13, 2013
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I have a quick question. I'm am going to be modding my case a little more-and I was wondering what difference it would make if I do the following:


  • Cut a hole OR make a usual case pattern by drilling holes in sequence behind the CPU on the side panel. And place a fan back there for either intake or exhaust.
    Is there any known testing on how this really affects this CPU and more importantly, Voltage Regulator Module temperatures. (On Prime95, they get ~10*C hotter than my CPU)



  • And Installing a fan in the 5.25" Drive bays of at least 70 CFM. It is at it's highest temperature, 28*C. But I have things infront of the bay I can not make a hole through-pre installed LCD screen(which I'm not removing) Will this affect much if there is no intake for the fan?
I want it to be blowing towards my cases exhaust. Angled to blow slightly more on my Mobo's Heatsinks than directly out.
So |1-2----3|
Where one is my case exhaust fan, 2 is my motherboard, and 3 is my drive bay.

Thanks in advance.
 
Solution
C12Friedman
Although there appears to be some validity to blowing cool air onto the underside of the CPU for longevity (some cases are designed for that), doing so would not really be of benefit to the VRM IMO, as the heat producers are on the other side of the board, getting airflow over the VRM would be my goal here.
The addition of an internal fan should help but placement should be such that it does not disrupt the airflow pattern of the case - What case are you working with here?
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C12Friedman

C12Friedman

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Jan 25, 2012
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Although there appears to be some validity to blowing cool air onto the underside of the CPU for longevity (some cases are designed for that), doing so would not really be of benefit to the VRM IMO, as the heat producers are on the other side of the board, getting airflow over the VRM would be my goal here.
The addition of an internal fan should help but placement should be such that it does not disrupt the airflow pattern of the case - What case are you working with here?
 
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Solution
Jake Wenta

Jake Wenta

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Mar 13, 2013
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I was thinking an exhaust, since intake would keep the air behind the CPU have poor pressure and no where to go-and keeping the heat in. I was going for 140mm, oriented more at the VRM's, but covering the whole CPU area.

My case is a NZXT Guardian 921 RB.
I've added a 140mm fan on the top, and mounted the x60 in push pull, with everything on the exterior. I don't care much about aesthetics. But it's a bonus, but it doesn't look bad at all, and my wire management is done pretty well. (Except for the ugly yellow speaker wire from the case. (I will eventually get pictures up-and semi tutorial for NZXT, since customer service has alot of people asking if it was possible quite a bit (At least from what I was told). So I'll help them out a little as well :)
*Phenomenal Support, I have 2 replacement fans on my way*

But enough about them.
There is around a half inch or less gap from the side panel to the inner wall, it has a pre-cut wall for back-plate altering.

Stock of 140mm top, 120 exhaust, intake-bottom front, and side. (Bottom hole for PSU fan, bottom mounted PSU)
I think that's really all you need to know :)
 
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C12Friedman

C12Friedman

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Jan 25, 2012
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I would think that should work well, 120mm may be easier to mount though
 
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Jake Wenta

Jake Wenta

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Mar 13, 2013
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Bah! They're louder for they're provided CFM :lol:

And a 140mm fan in the 5.25" bay.
Terrible text diagram:
_____________
|1-2--------4|-----|/
|1-2--3----4|--5--|\
|--2--------4|-___|)
|----------------|---|)
|____-------_|__|)
|------|-------|-----|
|____|____|___|\
...||................ ||.....
1=120mm exhaust. 2=VRM heatsink. 3=CPU, 4=140mm, 5=Drivebay.
 
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