ECS KN1 SLI - which fans are speed controled

Can anyone tell me which fan headers on an ECS KN1 SLI motherboard should be
speed controlled?

regards,

Beemer

On Mon, 12 Nov 2007 17:14:39 GMT, "Beemer"
<Beemer@nowhere.com> wrote:

>Can anyone tell me which fan headers on an ECS KN1 SLI motherboard should be
>speed controlled?
>
>regards,
>
>Beemer
>

What does the manual state? Usually it's the CPU fan
header. Check the bios settings, watch the result of
changing them as to which fan slows down, and try using
nVidia's nTune software to change fan settings.

If that's the board with the little rear fan behind the CPU
VRM power section, that in addition to a northbridge fan
would need throttled back to lower RPM to quiet the board
down, either by replacing the fan or puting a voltage or
current reducing control in series on the power lead (like a
roughly 2W, 68 Ohm resistor). Whether these fans will be
effective enough at cooling when reduced in RPM is a
variable I cannot predict, but certainly there is going to
be some margin, you could probably at least cut the RPM in
half before the consequences are significant, especially if
your case has decent airflow and the room ambient temp isn't
very high).

"kony" <spam@spam.com> wrote in message
news:ujchj3tr7hi7vr26cp3pk9t24mi12lgb04@4ax.com...
> On Mon, 12 Nov 2007 17:14:39 GMT, "Beemer"
> <Beemer@nowhere.com> wrote:
>
>>Can anyone tell me which fan headers on an ECS KN1 SLI motherboard should
>>be
>>speed controlled?
>>
>>regards,
>>
>>Beemer
>>
>
> What does the manual state? Usually it's the CPU fan
> header. Check the bios settings, watch the result of
> changing them as to which fan slows down, and try using
> nVidia's nTune software to change fan settings.
>
> If that's the board with the little rear fan behind the CPU
> VRM power section, that in addition to a northbridge fan
> would need throttled back to lower RPM to quiet the board
> down, either by replacing the fan or puting a voltage or
> current reducing control in series on the power lead (like a
> roughly 2W, 68 Ohm resistor). Whether these fans will be
> effective enough at cooling when reduced in RPM is a
> variable I cannot predict, but certainly there is going to
> be some margin, you could probably at least cut the RPM in
> half before the consequences are significant, especially if
> your case has decent airflow and the room ambient temp isn't
> very high).
>
>
Kony,

Yes this is the MB with the green air duct and fan presumably to cool the
caps next the CPU. I have had previous experience with these little pest
fans so as I have a fixed speed PSU fan just above I disconnected the pest.

The CPU fan header does not appear to be speed controlled unlike my previous
MSI K8 neo2 platinum MB. I can only guess that this is because the ECS is
a gaming MB for which use is not for me. 8:)

I have now run a 100% CPU load test and as it reaches 67.5C I have reduced
the cpu fan speed as you suggested using a resistor. All is now
reasonably quiet except for the PSU fan. I may pop its rivets and add a
resistor there too.

thanks,

Beemer

On Wed, 14 Nov 2007 16:48:53 GMT, "Beemer"
<Beemer@nowhere.com> wrote:


>Yes this is the MB with the green air duct and fan presumably to cool the
>caps next the CPU. I have had previous experience with these little pest
>fans so as I have a fixed speed PSU fan just above I disconnected the pest.
>
>The CPU fan header does not appear to be speed controlled unlike my previous
>MSI K8 neo2 platinum MB. I can only guess that this is because the ECS is
>a gaming MB for which use is not for me. 8:)
>
>I have now run a 100% CPU load test and as it reaches 67.5C I have reduced
>the cpu fan speed as you suggested using a resistor. All is now
>reasonably quiet except for the PSU fan. I may pop its rivets and add a
>resistor there too.

67.5C is a little bit hotter than it's good to see because
your room ambient temps may go up at some point and a
gradual buildup of dust will also raise the CPU temp. It
may still be stable at 67.5C but regarding your prior
question about overclocking, unless you get the temp lower
you won't have very good results overclocking (or rather,
overclocking will raise the temps and they should not be
allowed to go any higher, plus at any given temp the faster
the processor runs, the closer it comes to an instability
threshold).