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Topic Title: Dual CPU Temperature Difference
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Created On: 07/25/2006 08:46 AM
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 07/25/2006 08:46 AM
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bovenzi
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I am running two Opteron Italy 165s and see a temp difference from CPU1 to CPU2 of 10 degrees C. The temps right now are 28 and 38 respectively (ambient - 28). In the afternoon, they will climb to about 32 and 44 degrees C. Although these temps are never really extreme, the fan on CPU2 really starts to make a lot of noise.

I am just curious if others are seeing the same temperature difference.
 07/25/2006 09:04 AM
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RRavanger
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wow wierd...did u seat the toasty one properly maybe? if u might have messed up just a little it can cause big problems

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[SpeedTek]
 07/25/2006 11:24 AM
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bovenzi
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I am not really sure how I would not "seat" it properly. Seems to be a fairly foolproof thing to mount the heat sink to the CPU. I am using the heat sink from AMD.

This situation also makes the CPU2 fan run about 1600 rpm faster.

At least as reported by the BIOS or the T.S.M. from Tyan...
 07/25/2006 12:09 PM
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RRavanger
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hmm, the only problem might be that its either

A) a different stepping, sometimes a worser stepping may go hotter

that one is defective

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[SpeedTek]
 07/25/2006 01:51 PM
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bovenzi
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Sorry. Tyan responded with this being a known issue with the BIOS. I will flash it tonight and post the results tomorrow (if I boot up at all).

Tyan Thunder K8WE S2895 BIOS Rev 103 is the revision with the problem.
 10/14/2006 09:07 AM
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mckennma
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quote:

Originally posted by: Orpheus
I am running two Opteron Italy 165s and see a temp difference from CPU1 to CPU2 of 10 degrees C. The temps right now are 28 and 38 respectively (ambient - 28). In the afternoon, they will climb to about 32 and 44 degrees C. Although these temps are never really extreme, the fan on CPU2 really starts to make a lot of noise.

I am just curious if others are seeing the same temperature difference.



My 265s on the Tyan Thunder K8W are 4C difference. I would recheck the heatsinks. You might want to plug the heatsinks directly to the power supply. It could be the headers are not strong enough to power them properly.

-------------------------
Tyan Thunder K8WE
Dual AMD 280 Opterons
8GB NUMA enabled DDR333 2.5-3-3-7 RAM
PCI-X SCSI RAID
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 11/13/2006 08:16 AM
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Dimitrih7
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[quote name='Orpheus' date='Jul 25 2006, 07:46 AM' post='1363990281']
...the fan on CPU2 really starts to make a lot of noise.
[quote]

Fan making noise is not a good sign. I'd replace that fan if i were u. Might be bios but either way u dont want that fan going out on ya causing more problems down the road! USUALLY, fan making noise means lower RPMs less CFMs, which could be causing the heat issue.
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