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Old 07-16-2016, 07:28 PM   #16
Fixit7
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I just realized radeon is my graphics card.

Do they have sensors too ?

I know I should let this go, but sensors worked fine on my H.P. laptop with an Intel Dual Core cpu. :-)

I have had people tell me AMD chips are slower, but I do not see it as being slower than Intel.
 
Old 07-16-2016, 07:32 PM   #17
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Yes, the graphics card has its own sensors and they'll likely be fairly accurate. As I stated AMD CPUs do not report meaningful temperatures and AMD do not provide any useful information on how to use the temperatures they do report. This isn't a software issue and lm-sensors works just fine it's an AMD being pathetic issue.
(By the way I'm happy to be put in my place if I'm wrong any anyone knows better as I'd love to know whether my CPU cooling is working especially should I upgrade my CPU soon.)
 
Old 07-16-2016, 07:37 PM   #18
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An example:
Code:
sensors
it8720-isa-0228
Adapter: ISA adapter
in0:          +1.12 V  (min =  +0.00 V, max =  +4.08 V)
in1:          +1.50 V  (min =  +0.00 V, max =  +4.08 V)
in2:          +3.28 V  (min =  +0.00 V, max =  +4.08 V)
+5V:          +2.98 V  (min =  +0.00 V, max =  +4.08 V)
in4:          +3.07 V  (min =  +0.00 V, max =  +4.08 V)
in5:          +2.34 V  (min =  +0.00 V, max =  +4.08 V)
in6:          +4.08 V  (min =  +0.00 V, max =  +4.08 V)
5VSB:         +2.98 V  (min =  +0.00 V, max =  +4.08 V)
Vbat:         +3.33 V  
fan1:        1771 RPM  (min =   10 RPM)
fan2:           0 RPM  (min =    0 RPM)
fan3:           0 RPM  (min =    0 RPM)
fan5:           0 RPM  (min =    0 RPM)
temp1:        +34.0C  (low  = +127.0C, high = +127.0C)  sensor = thermistor
temp2:        +33.0C  (low  = +127.0C, high = +127.0C)  sensor = thermal diode
temp3:        +32.0C  (low  = +127.0C, high = +70.0C)  sensor = Intel PECI
cpu0_vid:    +0.000 V
intrusion0:  ALARM

k10temp-pci-00c3
Adapter: PCI adapter
temp1:        +19.2C  (high = +70.0C)
                       (crit = +90.0C, hyst = +87.0C)

fam15h_power-pci-00c4
Adapter: PCI adapter
power1:       41.38 W  (crit = 124.95 W)
Edit: The room here is likely about 22C

Last edited by 273; 07-16-2016 at 07:38 PM.
 
Old 07-16-2016, 09:03 PM   #19
Fixit7
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273,

I got it fixed. It shows the temp within 2 degrees C of what BIOS shows.

Here is the procedure.

Under Adjusting Temperature Offset

To figure the offset, subtract temp sensors shows from what your BIOS says.

https://wiki.archlinux.org/index.php...rature_Offsets
 
Old 07-16-2016, 09:11 PM   #20
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Do you have any links to AMD documentation for this? Perhaps you're having issues with the temperatures not seeming real and this helps but from what I can gather that's the tip of the iceberg.
 
Old 07-16-2016, 10:25 PM   #21
Fixit7
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No.

I was happy to get sensors in the ballpark with the temps, that I did no more research.

It was not a case of temps "not seeming real."

Sensors was showing my cpu temp to be 35 degrees F when my room is 71 degrees.

I have a thermometer inside my case.

It shows 80 degrees F.

Take care.
 
Old 07-16-2016, 10:32 PM   #22
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Then the temps you are looking at are irrelevant. They're not real temperatures and AMD don't tell us what they mean.
There's little point having a CPU temperature monitor if it's just showing some random number until the CPU get hot then it's showing some AMD number they don't share.
 
Old 07-16-2016, 11:01 PM   #23
Fixit7
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All I can say is that you have made up your mind that AMD suks.

I was a chemist for over 25 years.

No instrument, thermometer,etc was perfect in measuring test results.

ASTM procedures made allowances for that.
 
Old 07-16-2016, 11:03 PM   #24
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Quote:
Originally Posted by Fixit7 View Post
All I can say is that you have made up your mind that AMD suks.

I was a chemist for over 25 years.

No instrument, thermometer,etc was perfect in measuring test results.

ASTM procedures made allowances for that.
Great, then you have a link to the AMD specifications and an explanation of their temperature readings, please post it!
 
Old 07-17-2016, 10:28 PM   #25
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I am most definitely not a Chevy vs/ Ford or Intel vs/ AMD kinda guy but i would like to point out that AMD currently is lamenting it's worst server market share in 10 years which is now at 20%. At one time, 2005 - 2006, it was 50%. Make what you will of Intel's return to dominance but to assume that server engineers are given "some random number" seems way more than harsh and fanciful. Even 20% is many thousands of CPUs. In truth AMD chose a representative scale in an attempt to be more accurate during running state which does sacrifice some accuracy during idle. It i decidedly NOT because they suck.

I refer you to One Example Explaining AMD Thermal Sensing Scale

Last edited by enorbet; 07-17-2016 at 10:29 PM.
 
Old 07-17-2016, 10:37 PM   #26
Fixit7
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Looks like AMD temp sensor is useless as 273 has stated.

Quote:
Temperature monitoring on current AMD processors differs from that on Intel CPUs in two ways:


there is only one temperature sensor per CPU (not one per core), meaning there are no seperate temperature measurement values available for each CPU core.



the tempeature sensor does not read real physical CPU temperature, so that there can be a rather large temperature difference between the measured and real CPU temperature -- especially if the CPU is idle.
 
Old 07-18-2016, 12:54 AM   #27
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Just to add my issue isn't just the sensor being useless it's that my CPU seems to get "a bit too warm" under non stress-test loads and "above rated maximum" on stress tests. But with neither sensor showing the "real" temperature I don't know how seriously to take this so I'm just ignoring it. As I mentioned there seem actually to be three temperatures and if the lower one is the "special AMD sensor" then my CPU may not be overheating but the BIOS seems to display one of the other temperatures if any.
For reasons of economy I'll likely buy an FX-8370 later on this year (it's cheaper than a new motherboard and Intel chip) and if that seems less prone to overheating I may revise my opinion.
 
Old 07-18-2016, 07:05 AM   #28
Fixit7
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You might want to shove a thermometer thru a slot in the rear of your case.

Mine shows 80 -> 83 degrees F.

I see that as my fans doing a good job of cooling the CPU and GPU.

I have one fan bringing in air from outside, one fan for cooling hard drives and the usual CPU fan.

If they weren't doing a good job, that temp would be much higher.

If you see similar, then I would not worry.
 
Old 07-18-2016, 01:54 PM   #29
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It really is not so simple. I live in a cold enough country (I'm guessing ambient temperature is about 78F and it's "hot here" (about 75F outside)).
I know that the case is doing OK as my HDD and NVIDIA card are fine but I have no way of telling what's going on with the AMD CPU as AMD seem to think that it's none of my business. In order to bring the temperatures down I bought an after-market cooler but that invalidated my CPU warranty and since I've no way of telling how well it's working I have no idea whether it was worth it. Heck, the 3 or 4 (separate, on different occasions) applications of thermal paste I've made could be wrong? It's Arctic MX-4 that's priced like gold and I followed online tutorials and read some articles. Perhaps I'm still doing it wrong? Who knows?
As I mentioned, if my next (and very potentially last) AMD CPU doesn't show this weird behaviour then I'll maybe revise my opinion but I don't even know whether this CPU is faulty as I've nothing to compare it to as AMD have no useable literature.

Last edited by 273; 07-18-2016 at 01:55 PM.
 
Old 07-18-2016, 04:04 PM   #30
Fixit7
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Based on other folks recommendations and my experience, I would recommend NOT buying any more AMD chips.

It's poor business practice to lack proper documentation.

Which probably explains why AMD chips are less than Intel. (They are the "Ford Pintos" of chips)

It's worth the extra money to buy an Intel chip.

I wonder if an intel chip will fit in a AMD motherboard ?
 
  


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