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-   -   Processor clock frequency (http://www.linuxquestions.org/questions/linux-hardware-18/processor-clock-frequency-412341/)

killi 02-06-2006 03:20 PM

Processor clock frequency
 
Hi
Im wondering is there a way to set the clock frequency down in lin?
Cause i have this server and im trying to make it as quite as possible
therefor i wonder if i turn the clock speed down i can do without fan only heatsink.

The processor is on 550Mhz, and if i turned it down to like 40 i wouldnt need fan.


And i also wonder if it can be done can it be done with a script or program?

Killi

pljvaldez 02-06-2006 03:44 PM

I don't know about lowering the clock speed, but you can use a distro that will load only to RAM like Coyote linux that will take some of the noise away. You also could put a variable resistor in series with the fan to slow it down, which will make it quieter. You may have to open the box though...

palceksmuk 02-06-2006 04:03 PM

If I remember correctly when I was compiling my kernel there was an option to turn on frequency scaling so you could change the cpu speed

satinet 02-06-2006 04:06 PM

maybe it would be possible to alter the frequency in the bios (depending on how sophisticated it is).

underclocking.... not sure one could take it down that far though.

frequecny scaling definately works - i have it on my ubuntu laptop. again though, i am not sure how low you can go.

killi 02-06-2006 04:16 PM

Ok thanks for the tips, ill try doing it in bios, but i do remember reading it somewhere that i could change the clock frequency.

Opening the box is no problem but i do wanna make it noise free:)

Anyways thanks:)

palceksmuk 02-06-2006 04:59 PM

In my homemade divx player I removed the cpu&psu fan and replaced them with some big fans I got at a hardware store, they are rated at 12v but when I run them at 5v they are very quiet

Electro 02-06-2006 06:46 PM

Use a better heatsink and low dBa fans for the processor. Also use cork between the power supply and chassis. Add rubber mounting hardware on the hard drive to reduce vibrations although it will take up a 5.25 inch drive bay.

Turning the frequency of the processor down will not effect the noise of the system if the fan does not have a variable speed control. Also speed scaling will only work if the processor supports it. Desktop processors do not support it or they do not support it well. Reducing the speed to 40 MHz will make the whole system become as slow as a snail.

killi 02-07-2006 02:12 PM

Ok thanks for the help guys:) going to try some out on it..:)


Killi


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