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Is it normal for one CPU core to always run hotter than the others?

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  • CPUs
  • Core
Last response: in CPUs
November 4, 2010 10:34:00 AM

I've been monitoring Coretemp and noticed my core 0 is always about 5-8 degrees hotter than the other three cores. Specs are Q9450@3.2Ghz w/ Zalman Falal1ty cooler and Antec 900 case. Core 0 is 35-38 at idle with all the others at 30. Under load it always stays about 5-8 degrees hotter, like 45 for core 0 and 38 for the rest. I know it's not close to overheating or anything, I just find it strange. I guess it would make sense for one core to do the majority of the work, but every screenshot I've seen shows all cores at basically the same temp.

More about : normal cpu core run hotter

November 4, 2010 10:43:00 AM

May be i think the 1st core will be used by os and for system idling process!
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a b à CPUs
November 4, 2010 1:00:42 PM

It is normal, it is also normal for temp monitoring software to be inaccurate.
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a b à CPUs
November 4, 2010 1:13:44 PM

jitpublisher said:
It is normal, it is also normal for temp monitoring software to be inaccurate.


+1

There are many number of things that can make readings off. So it's very normal to have 1 core higher than another.

Now, If the temp program saying something like 85c on 1 core and the other core 50c, then there an issue.
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a b à CPUs
November 4, 2010 1:19:47 PM

I'd say its fairly normal.. you can also try removing the heatsink cleaning off the thermal compound.. reapplying and reseating the heatsink.. it may make no difference.
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November 14, 2010 7:14:30 AM

Best answer selected by djsprinkle.
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