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  1. #1
    Member UglyChild's Avatar
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    E8400 temps are uneven.

    Im using CoreTemp 0.96.1 to read the temps of my CPU. At idle; Core 0 shows temp of 20C, Core 1 shows temp of 32C. At full load temps are only 5C apart.

    I remounted and reapplied thermal paste few times, and temps are still the same. Is this common thing for this CPU?
    Last edited by UglyChild; 02-12-08 at 01:54 PM.

  2. #2
    Member Coreyhm1's Avatar
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    Its normal, mine reads 7c difference

    I think its just reporting the temps wrong
    CPU: C2D E8400 @ 4Ghz / 1.248v (C0)
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  3. #3
    Member meionm's Avatar
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    I get 5-10c difference and none of the cores ever idles below 42c
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  4. #4
    Member UglyChild's Avatar
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    Cool, thanks. At least i dont have a bad CPU.

  5. #5
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    Quote Originally Posted by Coreyhm1 View Post
    I think its just reporting the temps wrong
    Nope, its correct. It is just the difference in quality of each processor (less contamination = lower temps???) and the quality of the IHS installation. Mine are about 8 different on my quad; Core 0/1 63c load while Core 2/3 58c load.
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  6. #6
    Member Coreyhm1's Avatar
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    Quote Originally Posted by meionm View Post
    I get 5-10c difference and none of the cores ever idles below 42c
    I get the SAME thing.
    Quote Originally Posted by thideras View Post
    Nope, its correct. It is just the difference in quality of each processor (less contamination = lower temps???) and the quality of the IHS installation. Mine are about 8 different on my quad; Core 0/1 63c load while Core 2/3 58c load.
    Who knows, allot of people are getting the same exact temp readings on different coolers / clocks / voltages, thats the only thing that makes me wonder if its poor software support.

    The "CPU" temp for me, which is the bios reading, fluctuates to voltage and load changes realistically. But thats not the the core temps.. (it reads 28c idle and about 45c load)

    Maybe Intel will have an answer for us one day.
    CPU: C2D E8400 @ 4Ghz / 1.248v (C0)
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  7. #7
    Spawn-Inc's Avatar
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    on my quad there all 37 accept for core 2, its 38 on load (prime95) i get 49 on cores 0 and 2, 47 on the other 2 cores so mine are all pretty close.
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  8. #8
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    Quote Originally Posted by Coreyhm1 View Post
    Who knows, allot of people are getting the same exact temp readings on different coolers / clocks / voltages, thats the only thing that makes me wonder if its poor software support.

    The "CPU" temp for me, which is the bios reading, fluctuates to voltage and load changes realistically. But thats not the the core temps.. (it reads 28c idle and about 45c load)

    Maybe Intel will have an answer for us one day.
    If you look at the way the software works and what it reads, you will come to the conclusion that it isn't off, it can't be. If it was off on one, it would be off the same amount on the others.

    Unless they completely revamped the way they detect temps, I very much doubt it is off. You could ask "The Coolest" here on OCF since he wrote CoreTemp.
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  9. #9
    Member Coreyhm1's Avatar
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    Yeah, i'm not saying they are right or wrong. Its just almost everyone is getting temps that just don't add up..
    CPU: C2D E8400 @ 4Ghz / 1.248v (C0)
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  10. #10
    Destroyer of Empires and User Accounts, El Huginator
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    Quote Originally Posted by Coreyhm1 View Post
    Yeah, i'm not saying they are right or wrong. Its just almost everyone is getting temps that just don't add up..
    It could also be the way they are mounting the chip's IHS...no idea

    I just know how and where the program reads and it can't really be off.
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  11. #11
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    One of my cores has about 8-10 degrees difference.

    It makes sense to me because back in the single core days you could get good chips and average chips which ran cooler or hotter depending on the chip you were lucky (or unlucky enough) to get.

    Except now we have the dilema of either having 2 good cores, 2 average cores or a mix of both hence why there could be the difference in temps.

    Such is the way with the fabrication process and all that.

  12. #12
    Destroyer of Empires and User Accounts, El Huginator
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    Quote Originally Posted by DJ WATTS View Post
    One of my cores has about 8-10 degrees difference.

    It makes sense to me because back in the single core days you could get good chips and average chips which ran cooler or hotter depending on the chip you were lucky (or unlucky enough) to get.

    Except now we have the dilema of either having 2 good cores, 2 average cores or a mix of both hence why there could be the difference in temps.

    Such is the way with the fabrication process and all that.
    Just so you know, the "dual cores" are 2 cores on one die

    Like so:
    http://www.pcper.com/images/reviews/...%20-%20CPU.jpg
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  13. #13
    Member Monty_Python's Avatar
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    mine are nearly the same they vary by a degree or so C. Mostly the same
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  14. #14
    Member tranceaddict's Avatar
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    My temps are 5-6C apart during IDLE and 8-10C during LOAD.
    C2D E8400 - 4150MHz @ 1.37V
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