[ILUG] Dual Opteron M/B

[John Coleman]

On Fri, 17 Sep 2004 15:50:56 +0100, Kenn Humborg <kenn at bluetree.ie> wrote:
> > On Thursday 16 September 2004 22:50, Tony Bolger wrote:
> > [snipped]
> > > I'm trying to get my fans to run slower, cause once your CPU temp is
> > > reading room temp, there isn't much need for them.
> > Unfortunately, i can't
> > > get the fan throttling working under FC2, so it will be a hardware
> > > solution (a string of diodes to drop the voltage down somewhat).
> >
> > Good luck with the diodes, personally I'd try resistors.
> 
> Diodes will give you a very controllable voltage drop (basically
> 0.7V per diode).  With a resistor, the voltage drop will be
> dependent on the current being pulled by the motor.  Now, a
> motor is not a simple resistive element, which makes it hard
> to predict what size resistor you need for a given speed.
> 
> Good luck with the resistors, personally I'd try diodes :-)
> 
> Later,
> Kenn
> 
> 
> 
> --
> Irish Linux Users' Group
> http://www.linux.ie/mailman/listinfo/ilug/
> 
> 
Re: Loud fans on Athlon XPs
get proper heatsinks, like Thermalright SLK900A/Us and slap on 92mm
Papst fans or similar.

Couple that with PWM comtrollers for the fans, either manual or
controlled by temp-sensors in the case/ or touching the base of the
heasink(s) and you've got yourself a nice little system.

Always fit the biggest fan you can and run it slowly.

120mm Papsts running at 7V are whisper quiet.

To go even further, mount them using rubber grommets to isolate
vibration from the casing.

Re: Motherboard
Have you tried any European distributers?
I doubt Quicktec would sell many boards like that, and as such they're
already paying a premium for it which they can only pass on to the
customer, should they wish to remain in business.


-- 
John Coleman
Technical Officer
NUIG, Computer Society