Archived from groups: alt.comp.hardware.overclocking.amd (
More info?)
Charles wrote:
> Charles wrote:
>> How does one measure temperature?
>> After reading a few messages, it would appear that the correct
>> software will talk to the processor.
>> My processor is an AMD Athlon XP 2000+.
>> I am running Fedora Core 3.
For Linux, you'll want the lmsensors package. It's not the easiest thing to
get up and running on Debian, but FC3 should probably be a bit easier.
There's various front-ends for lmsensors, though I can't remember any names
off the top of my head.
> I just found a web site that says there is a temperature sensitive
> diode on Intel processors, but NOT on AMD processors.
That web site is incorrect. The last AMD CPU to not have an internal
temperature sensor was the 1400 Thunderbird. All Palomino, TBred, Barton,
and A64 CPUs have internal temperature diodes (ie: all desktop CPUs with XP
in their name). However, not all motherboards read the diode, many relying
instead on a thermistor in the socket. The easy way to tell the difference
between a socket and internal temperature measurement is that the internal
measurement will instantly jump several degrees when you go from 0% to 100%
load (eg: starting Prime95) whereas the socket sensor will take several
seconds to change even a degree.
Of course, due to differences in CPUs, motherboards, and BIOS revisions,
absolute temperature measurements are useless. If person A has a lower
temperature than person B, there is still a very good chance that person B's
CPU is running cooler. Likewise, you cannot compare temperatures between
different steppings, such as TBred vs Barton, let alone between the P4 and
an Athlon. The only thing they are good for is seeing if changing a
particular cooling component (such as moving a fan around) increases or
decreases the CPU temperature.
--
Michael Brown
www.emboss.co.nz : OOS/RSI software and more
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