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Subject: Re: Keeping AMD Processors Cool running Chess Programs?

Author: Matt Taylor

Date: 03:27:53 01/21/03

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On January 21, 2003 at 02:14:02, David Dory wrote:

>On January 20, 2003 at 18:09:47, George Wilson wrote:
>
>>How do I know if my xp2000 processor is running Cool or not? I went into the
>>bios and it said my processor was running at 127 degress is this real hot? Is
>>there some comparison chart i can go by?  I notice my temperature usually goes
>>up after i play some games with Fritz.  Just installed a Thermal Fan that cost
>>about 20 bucks, so far i haven't been getting the system crashes that I was
>>previously getting, but it still seems that 127 degress is hot. I just bought
>>this brand new amd elite motherboard and processor, so i can't see how it can be
>>a bad processor. I guess i will wait until i get another crash to complain, so
>>far i have been running fritz constantly for three hours with no crashes.
>
>At 127 degrees, you can be sure it is NOT running within proper operating temp.
>Yes, that is too hot!
>
>Fritz will exercise the CPU at 100%, increasing the CPU temp.

One would presume that 127 degrees is a measurement in Farenheit. Conversion to
Celsuis renders a result of 52.8 C. This is what both of my dual-CPU
workstations run -both- CPUs at, and sometimes the CPUs are even warmer.

As Dan stated, maximum operating temperature is 90 C for AthlonXP. At one point
I did not have quite enough thermal paste on my heatsink, and my AthlonMP chips
were running about 75 C (167 F) each. It worked just fine, though I shut the
machine down and corrected my error. I also know of someone with a similar
system, and his runs around 70 C. He has no problems.

As to the utilization of the CPU affecting temperature, I find that it makes
only a small impact with a properly installed heatsink. My CPUs vary about +/- 5
C (~20% thermal drop between CPU and ambient) between idle and full load. As for
the actual thermal output of the chip itself, it varies about 12% between
average load and maximum load.

I always go here to look up Athlon thermal data:
http://www.doerte-richter.de/mulle-78/AMD/amd_term_power.htm

-Matt



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