On Friday 26 September 2003 01:54 pm, Ernie Schroder wrote:
> On Friday 26 September 2003 01:20 pm, Collins Richey wrote:
> > On Fri, 26 Sep 2003 09:38:31 -0700 (PDT)
> >
> > Stephen Rose <[EMAIL PROTECTED]> wrote:
> > > There's probably a lot of ways to do it.  But this works well
> > > for me.  I do monitor the tempurature of the various components
> > > with remote thermometers.  Actually, with a reasonable amount
> > > air moving through the case, I don't really believe that
> > > convection has that much of a chance to take part in the
> > > cooling.  Again, my opinion.
> > >
> > > Steve Rose
> >
> > Just out of curiosity, what is the normal max temperature
> > tolerted by drives, cpu's, etc?  The only tool I have to provide
> > temp info is hddtemp.  hda (older, slower) does not return temp
> > info, but hdb normally is 48C-51C.  Is this good, bad, or
> > indifferent?
>
> I currently have the covers of Gentoo_1 I am going to un plug my
> front fan and replace the covers. After about 1 hour, I will record
> hd and cpu temps, then reattach the fan. After another hour I will
> record the temps and post results current temps are:
> CPU = 35 C
> HDA = 32 C


OK, I find this strange. Maybe someone else with a front and rear case 
fan can repeat my experiment.

With covers on and only rear fan blowing out:

CPU 35 C
HDA 32 C
(same as with covers off and both fans connected)
Note: I did not remove the front fan, only disconnected the 12VDC

Covers on rear fan blowing out and front fan sucking air in:

CPU 37 C
HDA 35 C

The results are counterintuitive to my experience cooling other 
electrical enclosures in my engineering and design experience with 
scientific instruments. One might also note that these results are so 
similar in all cases that these slight variations might be anomalies.
Ambient temperature is 2 degrees F (1 degree C) higher at the time of 
the last results. Top shows, in both cases, </= 98% CPU idle. 

-- 
Regards, Ernie
100% Microsoft and Intel free


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