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AMD Reps Official Answer To AMD CPU Temperatures.

post #1 of 30
Thread Starter 
Hey guys,

After reading many discussions about what temp (core vs CPU) to use and how high this temperature is I decided to contact AMD themselves.

Now, today, about 3 weeks after first contacting them, I got a PROPER reply from a AMD guy that explains the whole lot.

Note, this is an official AMD Tech Support guy/girl and I trust that he/she knows what he/she is saying.
Quote:
Dear Customer,

Your service request : SR #{ticketno:[8200474044]} has been reviewed and updated.

Response and Service Request History:

In general, we like to see temperature readings for your CPU around 30-50 C.
The official max is somewhere around 75-80 C depending,

The temperatures you show are not in any danger zones, and what they are useful for is to establish a baseline.
You know what "normal" is now, and if you get instability, and those readings haven't changed, then it probably isn't a heat problem.

You also know that if you see temps significantly higher than that in the future, that you need to check the airflow in your case, or clean the heatsink, or something like that.

Please check also this very good article that provides information on How to check CPU temperature:A complete guide to Check CPU temperature through BIOS or software on all operating system


http://rancidtaste.hubpages.com/hub/How-to-check-CPU-temperatureA-complete-guide-to-Check-CPU-temperature-through-BIOS-or-software-on-all-operating-system


In order to update this service request, please respond, leaving the service request reference intact.

Best regards,

AMD Global Customer Care

They recommend the use of speedfan / everest and the BIOS shows the CPU temp which is the one to go by. So, that's one thing finally cleared up, CPU temps matter, not Core.

Optimal temperatures for 24/7 usage are between 30c or lower idle and 50c or lower load. Optimal, meaning they CAN be higher.
I stated in my original question that there was a time their CPU specs mentioned 62.7c as max. That's where the part of not being in the danger zone yet comes in. Meaning, 65c is fine for a AMD CPU and it can withstand a lot more without any damage.

The next bit is him saying 75-80c is the official max. Depending meaning depending on the CPU model, a x2/x3 for example (80c) can probably have a bit more then a x4/x6 (75c).

Then next is the reason why AMD and 3rd parties keep 60c as a max: CPU's CAN get unstable with higher temperatures. They don't have to, but can.

Also, reading this, it makes me believe that the next statement I came up with just now is true:
My highly overclocked CPU runs 73c in LinX and hits 68c in-game but is perfectly stable.
- Nothing wrong with the above. It's within official maxes and the ''baseline'' he spoke about is a temperature at which it's stable. So, nothing wrong then eh!




Now, I have previously tested this, and yes, there's a truth to that cause my CPU does get unstable at about 68c CPU. Cores usually around 60c then. It will crash in a stresstest if I get it any hotter then that number. Can reproduce it perfectly cause every time it hits 68-69c it crashes within 10 minutes while keeping it under that at identical settings passes 2 hours. (Tested with LinX @ 7000MB).

So, let me hear it guys. This any good? smile.gif
Edited by Imprezzion - 2/21/12 at 12:29pm
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post #2 of 30
Quote:
Originally Posted by Imprezzion View Post

Hey guys,
After reading many discussions about what temp (core vs CPU) to use and how high this temperature is I decided to contact AMD themselves.
Now, today, about 3 weeks after first contacting them, I got a PROPER reply from a AMD guy that explains the whole lot.
Note, this is an official AMD Tech Support guy/girl and I trust that he/she knows what he/she is saying.
Quote:
Dear Customer,
Your service request : SR #{ticketno:[8200474044]} has been reviewed and updated.
Response and Service Request History:
In general, we like to see temperature readings for your CPU around 30-50 C.
The official max is somewhere around 75-80 C depending,
The temperatures you show are not in any danger zones, and what they are useful for is to establish a baseline.
You know what "normal" is now, and if you get instability, and those readings haven't changed, then it probably isn't a heat problem.
You also know that if you see temps significantly higher than that in the future, that you need to check the airflow in your case, or clean the heatsink, or something like that.
Please check also this very good article that provides information on How to check CPU temperature:A complete guide to Check CPU temperature through BIOS or software on all operating system
http://rancidtaste.hubpages.com/hub/How-to-check-CPU-temperatureA-complete-guide-to-Check-CPU-temperature-through-BIOS-or-software-on-all-operating-system
In order to update this service request, please respond, leaving the service request reference intact.
Best regards,
AMD Global Customer Care
They recommend the use of speedfan / everest and the BIOS shows the CPU temp which is the one to go by. So, that's one thing finally cleared up, CPU temps matter, not Core.

sorry, but i didnt see where this is clear?
i have always thought that i should monitor my CPU temps more than the core temps, but i was told that the core temps are the ones i want and the CPU temp is not correct?


-dimwit-

still confused.
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post #3 of 30
Mine will auto-throttle and drop cores individually to 0% load at around 68-69C die temp (not core) and keeps it from getting any hotter, turns the cores off and on, off and on. Not sure, by the sounds of it, must be a board 'feature' for lack of a better term. I don't hit those temps anymore, but I did prior to my radiator upgrade.
post #4 of 30
Thread Starter 
That's probably your BIOS settings. Mine also defaults to 60c throttling. I disabled it by letting it throttle at 90c.

And @ reply 1: Well, the link he posted is about hwo to read AMD's temps. All 3 ways, Everest, Speedfan and even the BIOS, ONLY read out the CPU (die) temp and NOT cores. So, that makes it pretty clear to me.
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post #5 of 30
Quote:
Originally Posted by Imprezzion View Post

That's probably your BIOS settings. Mine also defaults to 60c throttling. I disabled it by letting it throttle at 90c.
And @ reply 1: Well, the link he posted is about hwo to read AMD's temps. All 3 ways, Everest, Speedfan and even the BIOS, ONLY read out the CPU (die) temp and NOT cores. So, that makes it pretty clear to me.

sorry i still dont see were it says "Dont read core temps".
all it talks about is CPU temp and nothing about core temps.
as the title says-
How to check CPU temperature:A complete guide to Check CPU temperature through BIOS or software on all operating system.
nothing about core temps.
i know i am a dimwit, but am i wrong, am i missing it somewhere?

this is what i have been reading/learning-AMD Temp Information and Guide

scratches head.


-dimwit-
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post #6 of 30
Bah.. I still say keep it (the cores)under 55c tongue.gif
If your temps are over that.. You=doing it wrong! poke.gif
Edited by Schmuckley - 2/21/12 at 2:54pm
 
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post #7 of 30
I doubt the e-mail will clear up anything... wink.gif

The PII CPUs and some but not all of the FX CPUs have stated max 24/7 operating temps. on the AMD website.

Core temps seem to be what AMD is actually concerned with. The offical Max depends on the CPU model and if your talking core or CPU. This however may not be the 24/7 temp. A lot of software is not properly undated and thus gives improper temps. so take it all with a large grain of salt. IME Core Temp is the most accurate. If your CPU runs 100% stable at whatever temp. shown then you should be fine.

Unfortunately AMD's current tech is not so great IME. They do the best they can but they mostly read off of PC screens and they seem to be located in India without direct access to the engineers who designed the CPUs/APUs. Some of their replies are absurd. redface.gif

YMMV.
Edited by AMD4ME - 2/21/12 at 2:46pm
post #8 of 30
thinking.gif not sure what this guy's trying to prove..
But i can add this..With the phenom II 965..It would become unstable if the cores got over 58c.
Some can take a little more heat than others and still be stable.Some can't
 
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post #9 of 30
Why would anybody take the answer from a support rep seriously who doesn't even explain about CPU case vs core temp (Tctl)?
"we like to see temperature readings for your CPU around 30-50 C. The official max is somewhere around 75-80 C depending"
Huh???
Translation: "I don't know either but somebody dropped this support request in my lap. Here's some blah blah so I can close the ticket."

There are data sheets that explain the limits exactly. The only problem is that they haven't been updated for Bulldozer or at least not published on the Web (shame on you AMD.)
But somebody at AMD said (dunno if officially or unofficially) that the K15 thermal implementation is exactly the same as K10 and the Linux kernel uses exactly the same code as K10 for K15.
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post #10 of 30
Under full load my 8150 is stable even at 70c.
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