New CPU - Motherboard Alarm Sounds for Temps

Hey guys,

I just got a brand new E8400 Dual Core to put into my system. My motherboard is compatible with the latest BIOS update, which I did a long time ago. Everything runs fine, except the motherboard reads the CPU temp @ 103*C and the alarm sounds like crazy.

All windows temp sensors (Core Temp, Real Temp, Speccy, SiSoft Sandra {I had Sandra lite, but it doesn't want to work now}) read the CPU idling at about 34-36*C. Is it just the mobo sensor that isn't working with my CPU? Should I be worried? I mean, it seems stable and boots just fine. Everything else is working. It hasn't shut itself down even though the mobo shutdown temp is 85*C.

I disabled the mobo alarm for now thinking it's just a faulty sensor with this chip. Any thoughts?
8 answers Last reply
More about motherboard alarm sounds temps
  1. Try update bios from your motherboard vendor
  2. henydiah said:
    Try update bios from your motherboard vendor


    You think I should run the update again? I'm already running the latest BIOS version, which I had before I bought the CPU.
  3. I'd like to mention that the voltage is reading as 1.275V (VID.) Is this normal? I don't seem to get a lower voltage reading when/if halt state kicks in. Also, CPU-Z isn't giving me a voltage reading.

    I found this on my mobo's website. There are two revisions for the E8400 and I'm using E0. I'm not sure what "test" means though.

  4. seem to remember there was an issue with the temperatur sensors on some of these back when i 1st got one

    google e8400s have faulty temperature sensors and you should find lots of results

    cant remember the cpu vcore offhand--think it may have been 1.25v but it was a while ago when i had one
  5. better to buy a socket 1155 and core i3 now than bother with e8400

    you can get 8gb ddr3 fomr £37 on amazon
    socket 1155 motherboard £50-100 on amazon
    i3 2100 £91 on amazon
    total £178-228 on amazon

    (for another £60 you can get an i5 2500)

    temp sensor failure, same as above really search google to see if there is a fix
  6. I think you need compare with other software maybe bug can cause that :
    - hw monitor
    - coretemp
    - real temp
    Is the 3 software same result at hig temp it can say faulty sensor issue
  7. henydiah said:
    I think you need compare with other software maybe bug can cause that :
    - hw monitor
    - coretemp
    - real temp
    Is the 3 software same result at hig temp it can say faulty sensor issue


    I have those three programs, and all three report the same temperature (34*C) shown below:

  8. shanky887614 said:
    better to buy a socket 1155 and core i3 now than bother with e8400

    you can get 8gb ddr3 fomr £37 on amazon
    socket 1155 motherboard £50-100 on amazon
    i3 2100 £91 on amazon
    total £178-228 on amazon

    (for another £60 you can get an i5 2500)

    temp sensor failure, same as above really search google to see if there is a fix


    Thanks for the info. I wasn't ready to buy a new machine. I plan to use this machine for another 4+ years, and the E8400 should extend the life. I'll be sure to look for advice such as yours when the time to buy a new one comes.
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