[time-nuts] 53132 replacement fan

[jimlux]

On 11/21/16 6:39 AM, Charles Steinmetz wrote:
> Tom wrote:
>
>> EFB0412MD
>> Airflow 7.17 CFM
>> 6300 RPM
>> Noise 24 dBA
>>
>> FBK04F12U
>> Same exact form factor.
>> Air Flow 9.2 CFM
>> 9500 RPM
>> Noise 42 dB(A)
>
> Note the 18dB greater noise (that's a HUGE difference).  Even with bad
> bearings in the original fan, it is probably considerably quieter (by
> 10dB or more) than the proposed replacement.  On the other hand, the
> replacement moves 28% more air, which may be a good thing.
>

That's a 40mm fan, which is a standard size, I'll bet you can find a 
slower turning/quieter fan.