What problems to look for when reducing fan speed ?

24 Feb 2005 5:57 PM

Micko

I have a PII computer and used mainly for email ,Internet etc and
occasionally audio and graphic work.

Purchased a new (cheap) PSU recently and also added an inline resistor
cable to the (50mm)CPU fan so that it will spin more slowly but still
emitting a reasonable force of air. I now have a near silent machine and
am very happy with it.

Being a pessimist I'm concerned about the possibility of overheating and
although I am confident that overheating won't happen what warning
signs would I get if their were a problem ?

thanks.

Micko.

24 Feb 2005 9:30 PM

Vanguard

"Micko" <-@-.-> wrote in message news:421e15a6$1@212.67.96.135...
>I have a PII computer and used mainly for email ,Internet etc and
>occasionally audio and graphic work.
>
> Purchased a new (cheap) PSU recently and also added an inline
> resistor cable to the (50mm)CPU fan so that it will spin more slowly
> but still emitting a reasonable force of air. I now have a near silent
> machine and am very happy with it.
>
> Being a pessimist I'm concerned about the possibility of overheating
> and although I am confident that overheating won't happen what
> warning signs would I get if their were a problem ?

Download the monitor utility from your motherboard's manufacturer to
monitor your temperatures (CPU and case). Measure the voltage at the
fan after the resistor to make sure it is 7 volts or higher. If it gets
too low, the fan might not start spinning.

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24 Feb 2005 9:36 PM

kony

On Thu, 24 Feb 2005 17:57:00 +0000, Micko <-@-.-> wrote:

Show quoteHide quote

>I have a PII computer and used mainly for email ,Internet etc and
>occasionally audio and graphic work.
>
>Purchased a new (cheap) PSU recently and also added an inline resistor
>cable to the (50mm)CPU fan so that it will spin more slowly but still
>emitting a reasonable force of air. I now have a near silent machine and
>am very happy with it.
>
>Being a pessimist I'm concerned about the possibility of overheating and
>although I am confident that overheating won't happen what warning
>signs would I get if their were a problem ?
>
>thanks.
>
>Micko.

Lockups, data/calculation errors, etc.
I'd be more concerned about the cheap PSU than the CPU fan
reduction but you could touch-test the heatsink (CPU, not
PSU) to see how hot it feels. If it's not more than really
warm, you should be ok. Keep in mind that lower CPU fan is
easier when the system exhaust isn't decreased too much, so
the amount of air recirculated through CPU 'sink is lower.