Mailinglist Archive: opensuse (3031 mails)

[Aaron Kulkis <akulkis00@xxxxxxxxxx>]

Rajko M. wrote:
> On Sunday 17 February 2008 05:10:55 am Basil Chupin wrote:
> > > I started using after-market fans several years ago for both
> > > better cooling and lower (quieter) fan-speeds that result from
> > > using larger-diameter fans.
> > The bigger diameter of the fan the bigger diameter is the spindle, the
> > bigger is the 'dead spot' where no air is being blown -- and this is
> > also the where the heat-dissipating part of the cpu under the heatsink
> > is located.
>
> With small fans used in computer the spindle (motor, bearings) is usually the 
> same or almost the same size. The trick is that bigger diameter propeller 
> will rotate slower with the same size motor anyway, but due to better 
> efficiency of longer blades it will blow more air instead of blowing user ear 
> drums. Second, I haven't seen CPU cooling solution with bigger fan and no 
> funnel to keep that air flowing to CPU, not somewhere in that direction.

Many don't have a funnel, but they have a long-enough stand-off
that the dead-spot doesn't reach the heat sink anyways.




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