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post #21 of 43
Thread Starter 
if u have 6x20dbs fans, would that equal to 120dba :S
post #22 of 43
Quote:
Originally Posted by blade007 View Post
if u have 6x20dbs fans, would that equal to 120dba :S
No they are not cumulative. Your overall noise level will be whatever your loudest fan is. You might want to see what you CPU fan is rated at and try to keep them at or below that rating.
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post #23 of 43
Thread Starter 
ill be getting a ultra 120 extreme, and using a thermaltake thunderbird 120mm fan on this heatsink
post #24 of 43
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Originally Posted by ericeod View Post
No they are not cumulative. Your overall noise level will be whatever your loudest fan is. You might want to see what you CPU fan is rated at and try to keep them at or below that rating.
Correct me if I'm wrong, but still -- 10 20dBa fans will be louder than only one, though.
(It will not be 10 x 20dBa, but will be louder than just one 20dBa fan...)
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post #25 of 43
Thread Starter 
so the loudest thing coming from my computer would be my power supply right
post #26 of 43
Thread Starter 
Quote:
Originally Posted by The Pook View Post
Correct me if I'm wrong, but still -- 10 20dBa fans will be louder than only one, though.
(It will not be 10 x 20dBa, but will be louder than just one 20dBa fan...)
so if u have 7 21dba 120mm fans, wat would be the total dba, wat is the math to do this
post #27 of 43
Quote:
Originally Posted by ericeod View Post
No they are not cumulative. Your overall noise level will be whatever your loudest fan is. You might want to see what you CPU fan is rated at and try to keep them at or below that rating.
That, or simply keep them under about 30dB... most HSF testers agree that 33dB is your average computer noise, so below that you aren't going to hear them... so my rule of thumb is to keep them under 30dB, or as low below that as possible without sacrificing CFM or paying too much. With case fans though, above 50CFM you won't notice any difference in ambient temp... especially if you're installing six of them... hell, they could all be 40CFM and you wouldn't notice a difference. Just make sure your exhaust fans aren't right next to your inlet fans, or you'll be recycling the same air, to some degree.
    
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post #28 of 43
Thread Starter 
Quote:
Originally Posted by oneluvballer21 View Post
That, or simply keep them under about 30dB... most HSF testers agree that 33dB is your average computer noise, so below that you aren't going to hear them... so my rule of thumb is to keep them under 30dB, or as low below that as possible without sacrificing CFM or paying too much. With case fans though, above 50CFM you won't notice any difference in ambient temp... especially if you're installing six of them... hell, they could all be 40CFM and you wouldn't notice a difference. Just make sure your exhaust fans aren't right next to your inlet fans, or you'll be recycling the same air, to some degree.
inlet fans? dont know wat those are, but my case will be the stacker 832
post #29 of 43
Quote:
Originally Posted by blade007 View Post
so if u have 7 21dba 120mm fans, wat would be the total dba, wat is the math to do this
21bD... they don't compound in noise. Like was said, your computer is only as loud as your loudest fan. If you have 20 fans at 20dB each, then your computer will be 20dB if they are the loudest components. Usually my HDDs are one of my loudest components, unless my CPUs are working really hard. But I usually hear my HDDs over my case fans or CPU fans.
    
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post #30 of 43
Panaflo fans are my favorite fans. They are very quiet to my ears. I have used SilenX fans and I hate them. Thermaltake fans are also loud. The only companies that I trust on listed dBA & CFM specs are Panaflo, Delta, Sanyo, and Scythe.
    
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