Noise @ low RPM

[Gibbel1]

Hi@all, I wonder about the noise of the different models running at low RPM. For example, is the Slip Stream 500 significantly more quiet than the Slip Stream 1900@500 RPM. What about the bearing, does ist harm if the fan doesn't run at full speed? Most important for me is a low-noise Fan at low RPM, but a little RPM-buffer for high temperatures would be nice as well :-) Thanks for your answers!

[Oli]

The Slippie 500 really virtually makes no noise. Bigger problem will be to ensure that a Slipstream 1900 will start up with the voltage necessary for 500 rpm! But if you use a fan controller which starts up the fans with 12V and the slowly reduces the voltage it could work. Don't know if every Slip 1900 would support continous running with the low voltage you need to set für 500 rpm.

This table lists 4,0V as necessary for Slip 1900 resulting in approx. 430 rpm but this could vary (http://www.scythe-eu.com/forum/slip-...0-mm-fans.html).

[Gibbel1]

thanks for your answer, but I am not fixed on 500 RPM, I just wanted to know if there's no problem (noise or bearing-hurt) to use a faster fan with slow RPM over a while. I just want to cool down an Intel Atom 270 which normally doesn't need any cooling. But if there's no air-flow in the case I'm worrying about my hardware :-) so I wanna have a noiseless fan, but it also should be able to blow powerful if it's necessary. Well, which one should I take.... a slow one which is really noiseless - but without power-buffer, or a fast one (ran on low RPM) - perhaps not as durable because it's not working at normal (1900) RPM? or too noisy even @ low RPM?