slow speed fans

SpaceDreamer · Post by **SpaceDreamer** » Tue May 17, 2005 7:25 am

Can anyone recommend me fans running at a speed lower than 1000 RPM at 12V ? Any size between 80mm and 120mm ...
I read the Sticky about recommended fans but they talk about brands, not models or speeds...

frankgehry · Post by **frankgehry** » Wed May 18, 2005 3:34 pm

One of the coolermaster models runs < 1000 rpm.
http://www.svc.com/saf-s12-e1-19.html
Its pretty quiet. This may not be the best price.

rtsai · Post by **rtsai** » Wed May 18, 2005 3:35 pm

Why does it have to run at 12V? Why not just undervolt to get your lower RPM? I haven't yet had a fan fail to start at 5V (a few different kinds of 80mm, and Yate Loon 120mm), and 7V ought to work if 5V is too low to get the fan started ...

BenW · Post by **BenW** » Thu May 19, 2005 9:39 am

Nexus fans aren't much more than 1000 IIRC

BrianE · Post by **BrianE** » Thu May 19, 2005 11:35 am

I believe that new Aerocool Turbine fan people are trying out comes in at exactly 1000 RPM.

Post by **Ralf Hutter** » Fri May 20, 2005 6:13 am

The 120mm Globes might do the trick for you. The only problem is they vary a bit from sample to sample. About 40-50% of them run around 1010-1030rpm, and the rest generally run at about 970-980 rpm.

Depending on how many you need for your project, I'd suggest buying about twice that many, checking the rpms on them, and just trashing the ones that spin faster than 1000rpm.......

adala · Post by **adala** » Fri May 20, 2005 6:27 am

I just installed two nexus fans, they run about 1000-1100 at 12v.

SpaceDreamer · Post by **SpaceDreamer** » Mon May 23, 2005 12:15 am

rtsai wrote:Why does it have to run at 12V? Why not just undervolt to get your lower RPM?

I never said I'll make it run at 12V...
I'm asking about the 12V speed because that's the speed they specify, but I'm planning to run at 5V.

frankgehry · Post by **frankgehry** » Mon May 23, 2005 2:25 am

I hate wasting time answering posts when the poster's question does not reflect what he really wants to know.

SpaceDreamer · Post by **SpaceDreamer** » Mon May 23, 2005 2:44 am

You didnt waste any time, your answer was very useful.
My question really reflects what I want to know
because the speed of a fan at 5V is (roughly) in proportion with its speed at 12V

frankgehry · Post by **frankgehry** » Mon May 23, 2005 6:01 am

Sorry Spacedreamer. I looked at my last post and couldn't believe I wrote that. Anyway I'm glad you got an answer. - FG