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From: mac on 20 Apr 2010 23:40
I just installed a Thermaltake CLP0564 CPU Cooler "Frio" with Dual 120mm
fans. These fans come with speed control variable resistors (one for each
fan). I have them setup to Max. Is there a problem with leave them set to
max all the time? If I want to leave them set and never change them should
I set them not to max all the time? does it matter?

mac

From: Paul on 21 Apr 2010 00:36
mac wrote:
> I just installed a Thermaltake CLP0564 CPU Cooler "Frio" with Dual 120mm
> fans. These fans come with speed control variable resistors (one for
> each fan). I have them setup to Max. Is there a problem with leave
> them set to max all the time? If I want to leave them set and never
> change them should I set them not to max all the time? does it matter?
>
> mac

It is kinda hard, looking at the control potentiometer, to tell what
method it uses.

http://www.ocia.net/fullsize.php?filename=517_5.jpg

A potentiometer, could be tied to some other circuit using power transistors,
inside the fan hub itself. If the control effect is amplified, in that
case, the pot won't get hot.

Or, the potentiometer could be freestanding, in which case, the pot would
get hot if you set it to "LOW".

As long as there is no detectable heat coming from the pot, when set
to "LOW", you have nothing to worry about. Select a speed that gives
adequate CPU cooling. If you can feel heat coming from the pot, set it
to MAX and check the pot casing temperature again. If this is a cheap
and dirty implementation, the pot should run coolest at MAX.

If you know the bearing type of the fans, you may be able to decide
based on that factor, whether it is good to leave the fan running at
MAX all the time. For example, certain kinds of fluid bearings have
zero friction. At least, up until the point where the lubrication
escapes from the bearing. The Panasonic Panaflo fan for example,
used a bearing like that, where the working fluid is pumped over
the bearing, as the fan blade spins. Other bearing types, might exhibit
wear characteristics as a function of the number of times the fan
has rotated. In any case, a typical figure for fan life, is three
years of continuous usage, and with exceptions, that is about
all you can reasonably expect in any case. Some ceramic bearing
fans claim to support a longer life, but I haven't heard any
user stories to back up such claims. The ceramic bearing fan
I've got, is a bit noisy, and sits in its original box. Pretty
hard to wear it out, if it isn't being used :-)

Paul
From: Anoi Ance on 23 Apr 2010 08:00
On Tue, 20 Apr 2010 23:40:46 -0400, mac frustrated with the OS wrote:

> I just installed a Thermaltake CLP0564 CPU Cooler "Frio" with Dual 120mm
> fans. These fans come with speed control variable resistors (one for each
> fan). I have them setup to Max. Is there a problem with leave them set to
> max all the time? If I want to leave them set and never change them should
> I set them not to max all the time? does it matter?
>
> mac

Not sure if I could put up with the noise of running 2 cpu fans 100%
rpm but the SpeedFan software program you can set your min, max fan
speeds for all registered and variable fans. IIRC, fans need the 4-pin
connection vs 3-pin connectors to control fan speed.

Using SpeedFam:
http://unitstep.net/blog/2007/11/02/using-speedfan-to-automatically-control-your-pcs-fan-speeds/


From: Flasherly on 21 Apr 2010 11:50
On Apr 20, 11:40 pm, "mac" <m...(a)nospan.com> wrote:
> I just installed a Thermaltake CLP0564 CPU Cooler "Frio" with Dual 120mm
> fans. These fans come with speed control variable resistors (one for each
> fan). I have them setup to Max. Is there a problem with leave them set to
> max all the time? If I want to leave them set and never change them should
> I set them not to max all the time? does it matter?
>
> mac

Get the specs and find users with your CPU to get an idea of it's load-
to-heat charcteristics, monitor the CPU with something like SpeedFan,
and go from there to set your fans. I turn mine up when I add a load
and adjust it according for ambient room temp if not.
From: ShadowTek on 21 Apr 2010 20:21
On 2010-04-21, mac <mac(a)nospan.com> wrote:
> I just installed a Thermaltake CLP0564 CPU Cooler "Frio" with Dual 120mm
> fans. These fans come with speed control variable resistors (one for each
> fan). I have them setup to Max. Is there a problem with leave them set to
> max all the time? If I want to leave them set and never change them should
> I set them not to max all the time? does it matter?

Zalman makes pot switches if you want to play with RPMs.
http://www.newegg.com/Product/Product.aspx?Item=N82E16835118217&cm_re=Fan_Mate-_-35-118-217-_-Product
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