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Thread: RealTemp and Coretemp only reports 1 core.




  1. #1
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    Jun 2009
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    Thumbs up RESOLVED: RealTemp and Coretemp only reports 1 core.

    Config: E8400:E0@3.0GHz / Stock cooler is locked down correctly.
    GIGABYTE EP45-UD3P; Rev 1.1
    Award BIOS F9 4/16/9
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    Plextor PX-806SA 20X DVD-RW
    MSI MSI R4850-2D512-OC

    RealTemp and Coretemp only report 1 core. Do I need to enable the second core in BIOS?

    RealTemp 3.0. T=41C. Ran XS Bench and reached T=51C.
    Coretemp 0.99.4 showed T1=41C.
    Speedfan showed T1=40C T2=40C T3=-2C. [Not sure what T1 and T2 represent]
    CPU Z 1.50 reports 1 core as well?
    Last edited by speedyg869; 06-26-2009 at 07:04 AM. Reason: RESOLVED

  2. #2
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    Smile Re: RealTemp and Coretemp only reports 1 core.

    At the Mobo Bios "Advanced Bios Options" tab:- Unless the "Multiprocessor/Hyper-threading option is "Enabled", only 1 CPU core will be active on a C2D type cpu !
    The more I know, the more I know I don't know...

  3. #3
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    Default Re: RealTemp and Coretemp only reports 1 core.

    Quote Originally Posted by jimmor View Post
    At the Mobo Bios "Advanced Bios Options" tab:- Unless the "Multiprocessor/Hyper-threading option is "Enabled", only 1 CPU core will be active on a C2D type cpu !
    Thanks, But that option was removed from BIOS F9 4/16/9. I guess I will have to contact Gigabyte support.

  4. #4

    Default Re: RealTemp and Coretemp only reports 1 core.

    Quote Originally Posted by jimmor View Post
    At the Mobo Bios "Advanced Bios Options" tab:- Unless the "Multiprocessor/Hyper-threading option is "Enabled", only 1 CPU core will be active on a C2D type cpu !
    C2D have native 2 cores and they should be enabled by default.

    to the OP, "Load Optimized Default" settings in the bios

  5. #5
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    Smile Re: RealTemp and Coretemp only reports 1 core.

    Quote Originally Posted by aquax View Post
    C2D have native 2 cores and they should be enabled by default.

    YES, it's good common sense to have both cores Enabled by default ---> But when not, it's definitely worth checking if your Mobo has an option for setting the number of active cores and what it's set at??

    The option of having 1 or 2 cores enabled on a C2D is a NORMAL function ---> some Mobo's (usually Bios option) allow user selection and some don't ---> for example, the F4 Bios of my EP45-UD3P allows it!
    The more I know, the more I know I don't know...

  6. #6
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    Default Re: RealTemp and Coretemp only reports 1 core.

    I contacted Intel TS and they told me to download the CPUID utility and check it. I did and it reports both cores C1=3.0/1333 C2=3.0/1333.
    So maybe the method RealTemp and Coretemp are using is now out of date. In addition maybe GB goofed and didn't enable CPU Hyper-threading by default in F9. The option was available in F8.
    I contacted GIGABYTE TS, so we will see what they say. In the meantime I will try loading optimized defaults.

  7. #7
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    Default Re: RealTemp and Coretemp only reports 1 core.

    There's definately nothing wrong with the latest versions of either CoreTemp or RealTemp, they report both cores fine for me.

    Try deleting RealTemp.ini and CoreTemp.ini in their respective folders. They'll be re-created when you start the programs. Remember that you'll need to re-enter any temp offsets you may have created etc.

    If that doesn't work, open msconfig Boot tab --> Advanced options --> tick the number of processors check box and set it to 2. Re-boot and try again.

    There is a "Limit number of active processors to three" option in advanced settings, not sure of it's effect though as I've never enabled it. It's disabled by default.
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  8. #8
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    Default Re: RealTemp and Coretemp only reports 1 core.

    Ok, Thanks

  9. #9
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    Question Re: RealTemp and Coretemp only reports 1 core.

    Response from GB support:
    HT will depend on the processor, if supported it will be listed there. Since the E8400 is already an Duo Core processor HT is not supported on this processor.

    Do other people with E8400s see 2 cores in RealTemp or Coretemp?
    Thanks in advance.

  10. #10
    Join Date
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    Default Re: RealTemp and Coretemp only reports 1 core.

    @speedy, The issue is not Realtemp or Coretemp or CPUZ, since they all report the same thing. If you can, go back to a previous "working" BIOS and test again.
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