Strange behaviour of shown temperatures in AMD Overdrive

MrPixelDream

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Oct 20, 2014
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Hello folks,

I just renewed my thermal compound because I thought the already applied one which came with my cooler (Freezer Pro 7 Rev. 2) would probably not do the job as well as the separately bought MX-4.

The computer runs fine, but when I check the temperatures with AMD Overdrive, it shows very differing ones - from 36° Celsius up to 46° Celsius in idle. I ran Prime95 for about one minute to check what happens and the temperatures went down and didn't change very much - they were at about 38° Celsius for the time period of testing. Afterwards, I started another Stress Test with Prime95 and they went to 51° Celsius and were more or less stable on this value.

The CPU is an AMD FX 6300 Black Edition on its stock clock and stock voltage, I did not change anything there.

Are those temperatures realistic or should I try other tools? I thought OverDrive would do the monitoring job best because I am using AMD hardware and OverDrive is AMD too, so it's most likely that they are working fine together.

// EDIT 1: I ran another test for some longer time, and temperatures went down again, instead of rising. They keep being at 33° Celsius, which is pretty low. I can't see why they could be so low.

Thanks in advance!
 
The temps are not accurate until the socket heats up to 45C, after which they're normally more accurate. Use HWinfo to track temps, the CPU can't be at 38C on Prime95 load, it hammers the CPU and it should go to late 40C or early 50C at the least. 60C+ is more like what people see. Also, what do the temps in BIOS say?
 

MrPixelDream

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Hey,
I went to BIOS and my BIOS (MSI Click Bios II) tells me it's about 50°C when in Bios. HWMonitor reads the following values (under Prime95 testing):

Temperature 0 55°C (131°F) [0x37] (TMPIN0)
Temperature 1 70°C (158°F) [0x46] (TMPIN1)
Temperature 2 32°C (89°F) [0x20] (TMPIN2)

And the temperature shown as CPU "Package" (??) goes up to a maximum of 50° C.

What are these different temperatures TMPIN0, TMPIN1 and TMPIN2? As of what you guys are saying, the TMPIN1 with about 70°C sounds the most realistic. But what's CPU Package Temp then?
 
You can believe these softwares over AMD OD, they're more accurate.

Bzzzzzzz


That would be incorrect.

AOD calculates the appropriate *Thermal Margin* of the CPU on AM3+, FM2+ and chipsets all the way back to the AM2+ 770.

Starting with AMD OverDrive Ver 4.3.1.0690 instead of displaying CPU temperature, AOD will report Thermal Margin. Thermal Margin indicates how far the current operating temperature is below the
maximum operating temperature of the processor

 

MrPixelDream

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Oct 20, 2014
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So if it's showing 30°C, it means that theoretically my temperature could go another 30° higher than the current until the maximum stable/good/whatever temperature is reached?
 
Precisely, Socket temps equate to CPU temp. "Core Temp" is what AMD refers to as "TCTL" and is a non-physical temperature on an arbitrary scale measured in degrees. It does not represent an actual physical temperature like die or case temperature.

Also, Starting with the AM2+, AMD's digital sensor no longer reports an absolute temperature value anymore, but a reading with a certain offset, which is unknown. It is estimated that this offset is between 10 - 20C. So no matter what program OP uses, the reading will not be perfect.