Quiet PC's

[Scudette]

I had quite good experience with getting the fans to run from the 5 volt rail 
rathen than the 12v - you only need to make sure the fan actually starts well 
- but it runs quite smoothly. Basically cut the wires from the fan and plug 
them between the red and black wires on an ide power connector. The fan runs 
much slower but should help keep things moving so if the machine is not doing 
much (e.g. a firewall) it should be ok. Thats how my firewall operates and 
its absolutely silent (quite hard to get used to a silent machine actually 
cause you always think its off). 

If thats not enough you might be able to get a bigger hit sink too for the 
power supply.

You can get rid of the CPU fan if you underclock the chip - for example get an 
AMD chip (say 1.6Ghz) and unlock the multiplier and run it say at half speed 
- should not need a fan even at full load. Again if your firewall is not 
doing much it probably wont need a fan even at full speed.

On Wednesday 06 November 2002 20:54, Wally wrote:
> There is quite a bit of work being done in the over clocking community with
> water cooling.
>
> try sites like
>
> http://www.water-cooling.com/
>
> http://www.overclockers.com
>
> The built Fast - fanless PC's, yes I have even seen the PSU water cooled
>
> > > >The noisiest part of my floor-standing PC is the power supply fan
> > >
> > > However this one is still the bug bear. How do you get a
> >
> > quiet PSU to go
> >
> > > with the nice and silent VIA ITX and hard drive. Are there
> >
> > converters that
> >
> > > could be used instead of a PSU? Something similair to
> >
> > notebook power
> >
> > > packs?
> >
> > Haven't tried it yet, but apparently a couple of resistors
> > inserted in
> > the circuit that powers the fan can drop the power enough to stop it
> > making heaps of noise, but keep the fan spinning enough for things to
> > not overheat. The site I was looking at had details of which
> > resistor to
> > use. It'd be worth a google search.
> >
> > Geoff