CPU temps

[Leon Goldstein]

David A. Bandel wrote:

><snip>
>

>Well, personally, and not being a physicist but knowing enough to be
>dangerous (literally), I find fans lacking.
>
>Primarily, fans (or those I am aware of) use old technology.  They
>have shafts with bearings that are prone to wear and failure (friction
>just rubs me the wrong way ;-) ).  If I were concerned about cooling,
>I'd try to find fans (if they exist) that are maglev based -- that is,
>the impellor shaft is levitated and rotated within the cylinder and
>would therefore not be prone to normal wear and tear.
>
><snip>
>
I would be very interested in finding a supplier of fans with maglev 
bearings. :-)

At the moment we have to make do with muffin fans using sleeve, ball, or 
ceramic bearings.  The ceramic bearings are supposed to be the most 
durable, but are noisier than ball bearings.
I have a number of very old Taiwanese made fans equipped with ball 
bearings that still run quietly.  Quality makes a difference.

When I replaced a bad Intel 850 mobo, I gave my Antec mid tower a 
thorough cleaning and found a lot of dust in unusual places.  The Antec 
has clips for two auxiliary exhaust fans and two intake fans, as well as 
a fan mount in front of the hard drive cage.  I found the front fan 
mounting noisy, so I placed all of  the aux. fans in the back (total = 
2).  That was a mistake.   The  suction was drawing air in through 
every  case opening, allowing dust to accumulate.

I bought two Dynex ball-bearing fans; one went bad within an hour.  The 
Dynex fans look identical to Antec fans, and I  suspect come from the 
same factory, but my Antec fans have all proven reliable.  The two new 
fans are mounted as intake fans, and are balanced by two identical 
exhaust fans.   The  case is a bit noisier now, but I have noted that 
there is a lot less dust accumulating inside.  I think the free air flow 
inside the case now keeps dust in suspension and there is only a slight 
accumulation of dust on the fan blades. 


-- 
Leon A. Goldstein

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