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Silent PC rig?

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pmc:


--- Quote from: Katana Man on April 21, 2008, 12:22:17 pm ---The single most effective way to reduce noise is larger fans.  All cases I build now use 120mm fans (sometimes I'll go as small as 92mm for the CPU).  There are a lot of nice cases out there that offer 120mm fans in the front AND rear.

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Simple question: How do you mount a 120mm in a standard case meant for 80mm? In your pics it looks like you just mount across the space meant for two 80mm fans. Is it that simple? Do the holes line up?

My CPU fan (Cooler Master I think) is rattling like a sonofabitch so I need to do something about that too. I didn't know you could put a 120 on there... how's that mount?

-pmc

pmc:


--- Quote from: GinsuVictim on April 20, 2008, 11:16:45 am ---
--- Quote from: pmc on April 20, 2008, 09:48:18 am ---My MAME PC is fine inside the cabinet but my main computer is loaded with fans and hard-drives and it sounds like a jet.
-pmc

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I hear ya! I have a total of seven fans in my main system. I can never hear a word my wife says.....or maybe that's just me being me.....

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Hmmmm... extra benefit I didn't think of. I usually just keep turning up the radio until she goes away. Maybe I should order a bunch of extra cheapo 80mm sleeve bearing fans....
 >:D

-pmc

Lilwolf:

btw, there are some processor heatsink/fans that are designed for low sound.  look around and you will find some with big, slow fans over a big finned heatsink.  30 bucks - 50 bucks and you can get a good solution.

but take note.  your power supply ALSO has a fan in it.   Silent Power supplies can be MUCH more expensive (300 bucks in some case). 

I did a oil power supply myself (submerged my power supply sans fan in oil).... has been working for years.  I use this for my silent pc in my jukebox.  NOTE:  There is BAD oil creep.... it was a fun project, but if you go this route, let me know.   You need a good way to stop all oil coming out of the power supply. 



Stub:

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Katana Man:


--- Quote from: pmc on April 21, 2008, 01:20:05 pm ---Simple question: How do you mount a 120mm in a standard case meant for 80mm? In your pics it looks like you just mount across the space meant for two 80mm fans. Is it that simple? Do the holes line up?
-pmc

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Some cases can be modded to allow for 120mm, like I did with my Chenbro 611 or Supermicro 750:
Chenbro 611 project


Supermicro 750 project


But, save yourself the trouble, as there are many new mid tower cases that accept two 120mm fans.  Here is a thread I started for Cases with 120mm fans.  At the time of this thread's popularity, there was only around 8-10 choices.  Now there are many more to choose from.  Newegg allows you to search for cases with two 120mm fans. Here is a direct Newegg link to those cases. (Make sure they have one 120mm in the front, and one 120mm in the rear).

A word of caution, get a case with JUST TWO 120mm fans, or be prepared to modify the case to seal off any extra fan holes.  2 fans (one in, one out) is the most efficient way to move the heat out.  Many times, the cases with extra fans unecessarily move too much air forward or create negative air pressure.  The front fan (blowing in) should also run slightly faster than the rear fan. This is desirable to keep the balance properly (remember, the power supply fan is blowing out), and maintaining positive air pressure keeps the dust from entering into your DVD drives.



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