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Phenom II Overclocking Guide - Page 9

post #81 of 253
Quote:
Originally Posted by Quantum Reality View Post
Do AMD CPUs even have a TJMax like Intel CPUs do? How does temperature monitoring work exactly? The sparseness of the documentation on how these core temp readouts work is very frustrating for people who want to avoid damaging their CPUs by accidentally going over the rated maximum safe temperature.
Quantum Reality, good question. It would be nice to see the documentation on this. I've always followed the "core temperatures" and just ignored the cpu temp. Really though I don't think any harm can come from high temperatures. What is probably more important is over-voltage which could eventually lead to electromigration. Exceeding the thermal limit in my experience only results in a lockup/freeze. I also believe those advertised thermal specs are underrated.

Good luck
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post #82 of 253
Quote:
Originally Posted by thlnk3r View Post
MeatloafontheRadio, are you referring to core temperatures or the cpu temp? You shouldn't be seeing your temperatures go below ambients. If this is the case then it could be an indication of a faulty sensor...

Good luck
Core temps. Stayed around 18C most of the time but seen it drop to 14-15 a few times.
    
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post #83 of 253
Quote:
Originally Posted by MeatloafontheRadio View Post
Core temps. Stayed around 18C most of the time but seen it drop to 14-15 a few times.
MeatloafontheRadio, that doesn't seem right especially if it's going below room ambients (20C). I think the sensors on this board could be faulty.
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post #84 of 253
I am going to go back to stock and see what it says.
    
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post #85 of 253
Went back to stock.

Seen it drop to 17 in everest. CPU Core & Hardware Monitor showed it as 18.

    
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post #86 of 253
Quick question from a newbie(ish) Overclocker, is it sane wishing to overclock a Phenom II 550 BE to 4 ghz on air WHILE having the extra 2 cores unlocked?

Just considering my options for a new build...
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post #87 of 253
Now, I understand that the thermal temp's sensors become more accurate as they heat up. However the fact that it reads idle temps a few degree's off worries me. Should I update my bios?
    
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post #88 of 253
Quote:
Originally Posted by Isleptwithyourmotherboard View Post
Quick question from a newbie(ish) Overclocker, is it sane wishing to overclock a Phenom II 550 BE to 4 ghz on air WHILE having the extra 2 cores unlocked?

Just considering my options for a new build...
Isleptwithyourmotherboard, it's certainly possible. Quite a few users have done it in the 550BE Club. Though I think you have less luck with unlocking a 550BE then you do on reaching 4Ghz stable. However both can be difficult. The new 555 C3 is not out yet but rumor has it that this C3 stepping will yield a higher percentage in unlocks

Quote:
Originally Posted by MeatloafontheRadio View Post
Now, I understand that the thermal temp's sensors become more accurate as they heat up. However the fact that it reads idle temps a few degree's off worries me. Should I update my bios?
MeatloafontheRadio, I would give it a shot. The above temperature readings can't be correct. I have a feeling the board is to blame. Direct link to the bios page for your board: http://www.gigabyte.us/Support/Mothe...3145#anchor_os

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post #89 of 253
this is what someone told me on another forum

These sensors are calibrated to be accurate at the temperatures where the CPU's thermal protection features kick in, so the closer you get to that point, the more accurate the sensors will be.

and

Below 30C the sensors are not very accurate. Its one of the reasons we are mainly concerned about load temps. Bragging rights with the machine sitting doing nothing (which for a long time a lot of people here held a lot of stock in, and occasionly we still get a "it idles 3C over ambinet, yea me !" posts) are dubious at best.


that being said, the bios update did not help
    
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post #90 of 253
Ok, so basically it works like Intel's does in which they don't bother calibrating to idle, they care about accurate readout close to shutdown. OK, so the cores readout under load should be fine provided that the monitoring program itself is correctly interpreting the temps.
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