Which fan is more quiet?

[Syborg1211]

Which of these fans are more quiet? Or anything even more quiet that I didn't list, I want good performance though:

60x25mm= YS Tech 27.2 cfm vs Sunon 23.5
Sites say the same dBa but for the differing cfms I think differently

80x25= Sunon 30cfm vs 36 vs 42.5

Any input on whihc is loudest, which is best performance/sound ratio, and all that. I am looking for quietest since I already am having a bad experience with a Delta 38cfm fan right now. I want to be able to sleep somewhat near my computer, like in the same room!

 

[GiZzO]

Here check out my site, theres a table that allows you to sort dB/cfm greatest to lowest, it will make it real easy to find the one with the greatest ratio: (Over long research Papst seems to have the best ratio)

GiZzO's Fan Page

Though the fans i have listed there don't exceed 35dB.. beyond that its no where near labeling it as a quiet fan:
<- to 23dB - dead quiet all thats heard is air movement
24 to 27dB - Slight humm its noticebly there
28 to 31dB - Starts to get a little high pitched whine at this point
32 to 35dB - WAAAAAAAAAAAA

The bigger the fan the better ratio your gonna get, if this 60mm fan is for a heatsink, maybe think about going 80mm on it

Read this post about 60mm to 80mm

 

[Syborg1211]

Thanks! I will be checking out that site shortly.

 

[kyoshozx]

Great site Gizzo. Do you know a place that carries the Papst fans?

 

[GiZzO]

Only place i know of that sells papst fans german site that is really a bitch to navigate through
Theres a couple mail order catalogs here in the US, i sent for that hopefully they have the prices listed in there cause they don't on there website

www.ebm.com