Archived from groups: alt.comp.hardware.homebuilt (
More info?)
On Sun, 06 Jun 2004 18:31:36 -0400, David Besack
<daveREMOVEbesack@mac.com> wrote:
>> Thats the HSF I have, is it just me or is it damn noisey?? I use it with the
>> automatic temp sensing option and it usually hits full speed after around
>> 10mins use, even when idling its not far off full RPM, and thats only with a
>> AMPXP 2600+ 266FSB. According to the (probably inaccurate) reading it idles
>> around 47C and peaks around 53C.
>>
>> AC
>
>I thought it was a bit noisy too. I'm thinking about replacing it - but
>I'm not in a hurry to take everything apart (again).
There are a number of ways to quiet the existing cooler.
Typically a fan is ran at higher RPM range to score better at website
reviews, which descriminate and award "winner" based upon a mere 2C
difference, but a user willing to sacrifice, perhaps 5C, can have much
lower noise from any cooler by using any number of methods to reduce RPM.
If your heatsink has a base that's not so smooth, like this
http://www.mysuperpc.com/volcano_9_cpu_cooler_bottom.jpg
then you may see at least a couple degrees drop from lapping it.
If your heatsink has a manual POT adjustment like that seen in following,
http://www.mysuperpc.com/volcano_9_cpu_cooler.jpg
you can use that instead of the thermal sensor, or solder on a different
(slightly large value) POT in it's place.
However, since you mentioned having the thermal probe, perhaps yours is
the Volcano _11_. If the thermal probe plugs into a connector, and that
connector would give full speed if a jumper were on it, as mentioned here
http://www.techaddicts.net/volcano11P/volcano11p-2.html
then removing the thermal probe and NOT using the jumper should result in
even lower RPM. Alternatively, you could use a multimeter to measure
resistance of thermal probe before system is turned on (disconnected from
heatsink/fan) and substitute a POT of slighly larger (max) value than the
thermal probe. I have not measured that particular heatsink but I"m
guessing that a 10K-15K POT, maybe as low as 5K, should be about right.
Many people find that a variable temp probe isn't all the effective
because it's not calibrated per specific system, so it either never spins
up linearly over it's range with temp increase, or too early it runs at
full RPM. Of course the other simplier option is simply to move the temp
probe to a location not so hot, perhaps up in the tines of the metal,
fastened securely.
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