CPU Cores running at different TEMPS



  • Hi,

    I put together the following build and it was working good, all 4 cores at same temps giver or take by 1-3C.

    Mobo = Intel DQ77KB
    CPU = i5-2400S
    Ram = 8GB DDR

    I came across an I5-3470s and just installed it but my temps are jumping around everywhere, keeps spiking when the system is idle. I've removed it and put it back in with a bit more thermo paste but still same results, I'm no expert but this doesn't seem right.. Any ideas?



  • Hi

    This appears to be Bad Sensor reading for a few reasons:

    PFSense doesn't like the Motherboard Sensors
    Faulty CPU
    Mis-information.

    You could look into getting Windows Installed onto a Different drive and then running Windows Based CPU Tools with the same load and see if the figures match.

    Of course, if it thats important to you etc.



  • Just the fact that Core 0 is lower that the rest made me suspect of faulty CPU.

    1 - Make sure bios is the latest
    2 - Check temps in bios
    3 - check temps in windows



  • I have a similar set up.

    I am still on bios KBQ7710H.86A.0051.2013.0329.1350 date 03/29/2013

    I'm running 64bit 2.3.4 version of pfsense, with the following packages:
    apcupsd
    openvpn
    pfBlockerNG
    snort
    squid
    squidGuard

    All on latest versions.

    I have 2 vlans.

    Around 60-80 devices in a home environment.

    My temps are generally all within a degree or two of each other.

    Kevin



  • A i3 or i5 can have always 1 or 2 core warmer then the other core's.
    These i3 and i5 cpu's have a embedded Intel HD graphic card, when this graphic card is under load,
    the graphic part of the cpu gets hotter and this can rise up cpu core(s) next to it.

    Grtz
    DeLorean



  • Hi

    @DeLorean:

    A i3 or i5 can have always 1 or 2 core warmer then the other core's.
    These i3 and i5 cpu's have a embedded Intel HD graphic card, when this graphic card is under load,
    the graphic part of the cpu gets hotter and this can rise up cpu core(s) next to it.

    Grtz
    DeLorean

    I get the same thing on a Intel Pentium Processor N3700, it's just the way they are sometimes, providing no core is exceeding the maximum ratings there is nothing to worry about.  I've been running my system 24/7 for almost a year and it is rock solid.

    Sometimes the cores are heated by other parts nearby, other times a thread or process is set to have an affinity (will always run) on the same CPU core, or the CPU chooses a core to constantly tick over to allow others to sleep longer, so the result is the other cores run cooler and one core runs warmer, exaggerating the differences.

    Regards

    Phil