Temperature sensor, where do I stick it?

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My Aspire case has a front panel temperature guage and the instructions say
that I can tape the sensor to the CPU heat sink, the hard drive case, or
just anywhere within the computer case to get an average interior
temperature.  Any suggestions as to the best place to put it?  Doesn't the
CPU already have a way to report it's operating temperature?  (AMD 64 3800+
Dual Core)


Re: Temperature sensor, where do I stick it?

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I'd say that the CPU temp would be about the most important device to
However...check your cpu manual as the CPU may very well already be
and there may be software that came with the mobo to monitor it.

If you already do have CPU temp. monitoring,,,I guess I'd place the sensor
on the harddrive

Re: Temperature sensor, where do I stick it?

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Some of those sensors are sensitive to stress. If you bend the
sensor, that can ruin the calibration (change the resistance

If it pretty hard to fit a sensor like that, to the CPU, since
there is a real danger the sensor will prevent the heatsink
from making good contact. Engineers who do this kind of work,
mill a channel into the heatsink, and place their measurement
device in the channel. That is not a practical solution for a
home user (especially as the cheap sensors are so big). And
placing the sensor on the CPU heatsink or to the side of it,
is hardly measuring the CPU temp (you'll get a more "lukewarm"

You can stick it to a disk drive, and then you would know the
disk drive case temp.

Or you could leave it blowing in the breeze inside the computer
case, in which case it is telling you the computer case temp.

Considering that the disk drive temperature may be available
via SMART, and the CPU temp and motherboard temp are available
via the motherboard monitor chip, there really aren't any other
unique things that need to be measured.

I've got a dual channel digital thermometer for computers here,
but it sits in the box :-) I only use it for quick checks, like
whether my hard drives are cooled properly or not. I use MBM5 in
Windows, if I need to monitor the CPU temp while gaming.
Speedfan is another tool that can display temperatures.


Re: Temperature sensor, where do I stick it?

On Fri, 9 Jun 2006 13:46:32 -0700, "itemyar"

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IF your video card doesn't provide a temp report and it's a
gaming card, subject to 3D gaming of course, you might
devise a way to mount it there (method might depend on the
card and 'sink it uses).  Otherwise, if your motherboard's
"system" or "case" temp sensor isn't a discrete sensor but
rather one in a chip (you'll have to research this), you
might mount the case sensor in free (case) air to get a more
true ambient case temp.  Of course you will have to check
this sensor, since it may not be calibrated you might need
to factor for an offset by comparing to readings from
another thermometer you trust.

If you had a particularly problematic piece of hardware (for
example a rare few hard drive models have certain parts
subject to overheating) you might want to mount it direct to
the problem subcomponent... mounting method varying based on
what it is.

Re: Temperature sensor, where do I stick it?

Thanks all for your suggestions.  Since I'm just in the plugging all the
connections from the case to the mobo phase, I think I'll just mount it in a
convenient spot to measure the overall interior temperature for now.  Once I
get my system up & running I will give it some more thought.

Re: Temperature sensor, where do I stick it?

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I would think that would be the best anyway. All newer systems monitor CPU
temp and about all video cards in the last couple of years have temperature
monitoring in their drivers. Case temp is a good indication of how good your
airflow is overall. This should be well under 40C max. 32C - 35C would be
optimal for most of today's systems. Make sure you try and place the sensor
away from your HDDs, chipset, video card and CPU. These produce a lot of
heat and will give you a false high case temp. Try and place, or hang it in
the most central place in the case away from these hot spots.


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