Where the heck are you guys pulling this information from? Variable speed? Voltage reducing?Originally posted by: Jolt2
The NMB fans at Directron are 40 dBA @ 12 volts and 22 dBA @ 7 volts. To get the lower noise, Directron sells a voltage reducer for $3.99 each. You can make your own by hooking the fans up to the red and yellow wires from your power supply. This will give you 7 volts.
You may also want to check this site out for more info..... very good site!
7volts.com
We'll see if tuan121 ever responds again. Until then I'll stick with "they're incompetent" and that it is the range for the fan model line. I've seen people do it a dozen times when they only look at the first two segments of the model number.Originally posted by: JokerF15
Sleeve Bearing is generally slightly quieter, but Dual ball bearing has a better reputation for lasting.
ThisisMatt: Usually when a website quotes a fan as: 22-40cfm is means its variable. That's What I get from it. Goto svc, 2cooltek etc and you'll notice that also. I've only seen fan ranges at directron (maybe i'm not looking hard enough).
The Zalman fans are really good in 'quiet' mode. I wouldn't purchase one myself to use in normal mode. I wish Zalman would allow the selling of the inline resistor. Would be a good selling item. Specially if it was aroudn $1.50.
-JokerF15
Originally posted by: RalfHutter
I'll report back with my impressions of the noise difference and cooling abilities.
I concur...the L1A's I've used were higher pitched. They're rated 1dBA less, but the NMB's are quieter IMO.Originally posted by: RalfHutter
Originally posted by: RalfHutter
I'll report back with my impressions of the noise difference and cooling abilities.
I installed the 4 NMB's in my case yesterday morning. They are very slightly quieter (more lower pitched really) then the 4 L1A's they replaced. They cool as well as the Panaflos. Exact same case and CPU temps at idle and under load.
I'd call it a toss-up. If I wasn't actually listening real close to hear a difference, I don't think I would have, and both the NMB's and Panaflo's cool as well as each other. NMB's are $2.50 (or 10 for $18.50) vs. Panaflo's for $7 from svccompucycle.
The 4 segment model number would be more helpful.Originally posted by: tuan121
ok, i purchased 2 of these fans at directron and they are pretty loud. i have the panaflo and they dont compare. i got 2 of these and they are both the same. i check the serial on all of them and they are the same. so im guessing all are about 40dba. hope this help.