Originally posted by: virtualgames0
sleeve > ball
Ball bearings are noisy as hell... I'd take a sleeve bearing anyday.
Maybe side-by-side, when newly-installed... but wait 3-6 months, for the scraping, grinding, warbling, unevenly-worn-sleeve-bearing noises to appear. Then tell us that sleeves are quieter, overall.
Edit: Comparing the specs for the
fan in question at Newegg, to
This BB fan on Speeze's web site, the BB fan is actually quieter than the sleeve-bearing fan, out of the box.
Newegg sleeve:
Model: Speeze 80mm DC Case fan, Model FD08025S1M4
Bearing Type: Sleeve
Nominal Speed(RPM): 2500+/-10%
Max Air FlowCFM): 31.73
Rated Voltage: 12V DC
Noise(dBA): 28.0
Speeze BB:
Model: 80mm FD08025B1L3/4 Case Blower
Bearing Ball bearing
Rated speed 2500 RPM +/- 10%
Noise level 25 dBA
Air flow 37.80 CFM at 2,500 RPM
Life Hours Ball bearing: 50.000
Connector 3 & 4 Pin, mainboard & Power supply
According to these specs (if they are accurate), then the BB fan is actually quieter, and still moves *more* air than the sleeve. This should make those that think that sleeve is automatically quieter than BB think again, especially considering the value/longevity proposition of BB fans.
Edit 2: I found the specs on Speeze's site for the same sleeve-bearing fan that Newegg sells
here. The noise/CFM specs are identical to the BB specs, which sounds slightly odd to me. (I sense a cut+paste.) The lifetime specs of the BB are nearly twice that of the sleeve-bearing though, and certainly the BB specs are no worse, noise-wise, than the sleeve.