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Experiencing issues reading CPU temperatures

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  • Overclocking
  • CPUs
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April 6, 2014 9:04:41 AM

Running Prime95 for 15min yielded the following temperatures on my AMD 8320 (using Hyper 212 EVO) while under a mild multiplier only overclock of 4.0ghz (3.5ghz is stock):

Speccy: 39C
Coretemp: 40C
Speedfan: 46C
Real Temp: Failed to install, couldn't recognize processor

I'm concerned about these results for two reasons: First, they do conflict, even if only slightly. Which could be a problem as I get closer to the 60s, does anyone else run into this sort of issue when detecting temperatures? Second, they seem a little too good to me under full loads, are these number feasible for the Hyper 212 EVO while on Prime? I don't want to go higher only to find out that my temps are off by 10 degrees or something like that after my CPU fries.

Additionally if something seems to be amiss, I'd be willing to test again with different software that someone recommends. Thanks for all replies.

More about : experiencing issues reading cpu temperatures

a b K Overclocking
a c 145 à CPUs
April 6, 2014 9:18:15 AM

It is important to know that most systems have to temperature sensors.

Socket/LGA - This is the temperature under the cpu
Core - This is the cpu's built in sensor(generally more accurate and shows a high number)

Now comes the issue. These built in sensors are made to shut down the cpu in case of overheat and are NOT accurate at low temperatures in most cases.

I have seen many core sensors reporting numbers like 10c(mostly AMD sensors tend to show WAY lower at idle) in a 23 degree room(worse yet people believe this is accurate and that somehow a cooler can get lower than room temps.). This simply can not happen. So the accuracy only gets close when things heat up.

Board sensors are what most cpu makers use for the specs(so it is the lower temperature in most cases).
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April 6, 2014 9:38:38 AM

Just finished the HWMonitor test - got right around 38/39C. I also noticed one of the temps on the mobo was showing at 46 in HWMointor. I wonder if that was the number I mistakenly saw as my CPU on Speedfan, which has substantially less clear indications of what each temperature correlates to than the other three programs. Either way, 3/4 put me in the same ballpark.

Is it safe to assume the temps are accurate then? These don't seem low to anyone?

I hear you about the ambient temperature. Every single one of those programs (or the AMD chip itself) obviously lies about idle temps. My house never deviates from around 21c-24c, yet they all say my idle temps are <20c.

I was aware of the socket vs. core issue in temps, but I typically don't see the two distinguished in these programs so I'm assuming they're talking about core. Speccy does show me the temperature in each core, which invariably match, so I hope that's on the right track.
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a b K Overclocking
a c 145 à CPUs
April 6, 2014 10:38:40 AM

The core temp from Speccy show all the same because AMD seems to use a single sensor for the chip. So no problem with that.

I find AMD's current crop of cpus runs quite cool(this may the reason AMD gives them a lower top rated temperature). Almost all my Intel builds "run" hotter, but it may well just be more accurate. After all power has to generate heat.

If your board has its own software to check the temperatures, you can find out what HWmon sensor is the socket without much issue.

Every user has a temperature they want to see. Under 70(core) and 60(socket) is fine by me.

Also note that HWmon is not perfect

The temp in red with the strange high and low(they are a random spike and do not stay for any time.) is my socket temp and is lower than the cpu temp. This is common to Intel cpus, while on AMD it starts the other way and seems to get closer as things heat up.
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