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General question about case fans - Page 2

post #11 of 14
for case fans, The static pressure does not matter as much as it would for your heatsinks/rad.

An ideal candidate for case fans would be Coolermaster R4's!
AKA coolermaster R4 / Coolermaster Sickleflow
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post #12 of 14
Quote:
Originally Posted by xebian13b View Post
It looks to me like the reason why that fan pushes 70 cfm at 19 dBA, is because the fan is spinning at 2000 rpm. I don't doubt that the fan is quiet, but I have a hard time believe that the blades are spinning at 2000 rpm and its only 19 dBA, but thats just me
keep in mind, that most fan manufactuers are dishonest about there product specs. in fact as far as i know the only manufactuers that are honest are the ones the supply industrial corps.

most of what scythe publishes is pretty accurate. but cooler master has been know to falsify there specs.

also, anything that spins at 2k or more(120mm) will in fact be way louder than 19dba. in actuallity they will be close to 35dba.
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post #13 of 14
even if the fan manufacturers were honest, and i think that some are, getting them to use the exact same standardized testing methodology would be impossible.

so you have to go to places like www.silentpcreview.com, where they use standardized testing procedures, with expensive microphones.

you can't test fans with cheap mics, because they don't have the proper noise floor... you also need a quiet chamber to do the testing in, because it's really difficult to get a low ambient noise.
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post #14 of 14
Quote:
Originally Posted by danimal View Post
even if the fan manufacturers were honest, and i think that some are, getting them to use the exact same standardized testing methodology would be impossible.

so you have to go to places like www.silentpcreview.com, where they use standardized testing procedures, with expensive microphones.

you can't test fans with cheap mics, because they don't have the proper noise floor... you also need a quiet chamber to do the testing in, because it's really difficult to get a low ambient noise.
Basements are nice for that, especially with all air-handling equipment off.
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