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 Post subject: more fans or more cfm
PostPosted: Fri Dec 20, 2013 4:18 am 
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Joined: Sun Dec 08, 2013 9:27 am
Posts: 5
might be a stupid question, but I'm not sure.

fan1: M12-1, 8dBA, 58cfm3
fan2: M12-2, 16dBA, 87cfm3

can I argue 2x fan1 is same noise as 1x fan2, 2x fan1 is always better compared to 1x fan2 because it delivers (2x58-87) = 29cfm3 more airflow?


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 Post subject: Re: more fans or more cfm
PostPosted: Fri Dec 20, 2013 8:16 am 
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Joined: Mon May 16, 2011 11:23 am
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Location: Germany
Quote:
What is a decibel? Zero decibels (0 dB) is the quietest sound audible to a healthy human ear. From there, every increase of 3 dB represents a doubling of sound intensity, or acoustic power.


http://www.noisehelp.com/decibel-scale.html

So, no, you can't.


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 Post subject: Re: more fans or more cfm
PostPosted: Fri Dec 20, 2013 8:43 am 
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Short answer: 2 fans means you would get more cfm with less noise than the one louder fan. You might find this handy.

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 Post subject: Re: more fans or more cfm
PostPosted: Fri Dec 20, 2013 9:33 am 
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The best method is to reduce air restrictions by cutting out stamped grills, etc. Then a slower fan has better airflow, and is much quieter.

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 Post subject: Re: more fans or more cfm
PostPosted: Fri Dec 20, 2013 1:17 pm 
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Joined: Sun Dec 08, 2013 9:27 am
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CA_Steve wrote:
Short answer: 2 fans means you would get more cfm with less noise than the one louder fan. You might find this handy.


great info CA-Steve, thanks a lot!


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 Post subject: Re: more fans or more cfm
PostPosted: Fri Dec 20, 2013 2:33 pm 
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Location: Monterey Bay, CA
The longer answer is: It depends on the case and the components therein. :)

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1080p Gaming build: i5-4670K, Mugen 4, MSI Z87-G45, MSI GTX 760 2GB Gaming, 8GB 1866 RAM, Samsung Evo 250GB, Crucial MX100 256GB, WD Red 2TB, Samsung DVD burner, Fractal Define R4, Antec True Quiet 140 (2 front + rear) case fans, Seasonic X-560. 35-40W idle, 45-55W video streaming, 170-200W WoW, 200-230W Rift, 318W stress test (Prime95 + Furmark)

Support SPCR through these links: NCIX, Amazon and Newegg


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