Re: Fan speed is tied to CPU usage - noise intolerable
- From: John Jordan <junk@xxxxxxxxxxxx>
- Date: Sat, 30 Jun 2007 19:40:04 +0100
Philip Herlihy wrote:
My customer has an HP dx6100M which has recently been moved to a new acoustic environment (new desk/workstation). The fan speed rises and falls with CPU usage (not temperature) and it's quite noisy now - the wailing noises are driving them nuts. I presume there must be some way to get the fan to chug along at a constant speed (I'd install an additional quiet fan as a precaution). Any advice?
Can't find any useful information on this machine, but a visual inspection will tell. If it's a standard S775 mounting, consider replacing the stock heatsink, because it doesn't sound like it's up to the job.
I wouldn't be sure that it's CPU usage rather than temperature triggered, as die temp changes can be very rapid, particularly if the CPU->heatsink contact is poor. Note that increased case cooling is not a direct substitute for CPU cooling.
Fan speed control is either implemented by voltage (3-pin) or PWM (4-pin). If it's PWM, you can disable the control by disconnecting the fourth pin, although this may lock the fan to the lowest rather than highest speed. Otherwise you could try updating the BIOS if there isn't an option to disable the control.
--
John Jordan
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- Fan speed is tied to CPU usage - noise intolerable
- From: Philip Herlihy
- Fan speed is tied to CPU usage - noise intolerable
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