Noise vs. Fan Size

[Cornelius240]

Just wondering if anyone knows how much of a difference in noise there is between fans of different sizes with the same dba levels. i.e. a 120mm fan running at 35dba vs a 80mm at 35dba vs a 60mm at 35.

 

[Mavrick007]

Noise is noise, it shouldn't matter what size one is than the other.

Now a bigger fan should put out more cfm at a slower fan speed so it should mean that the bigger fans while putting out the same amount of air as a smaller fan moving alot faster, would be alot quieter.

Ie. Two 50cfm fans, one 80mm, and one 120mm. The 80mm fan should be humming along alot faster than the 120mm fan and therefore the 120mm fan should be alot quieter. This is just a correlation and not an actual comparison of any "real" fan.

 

[WarCon]

One other thing to note about size difference is that the frequency of the noise tends to decrease when the fan size increases. I personally find lower frequency noise more tolerable than higher frequency noise. That may vary from person to person though.