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New CPU - Motherboard Alarm Sounds for Temps

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August 27, 2011 3:45:17 AM

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?
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a b V Motherboard
August 27, 2011 3:53:31 AM

Try update bios from your motherboard vendor
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August 27, 2011 5:54:52 PM

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.
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August 27, 2011 6:04:06 PM

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.

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a b à CPUs
a b V Motherboard
August 27, 2011 6:21:45 PM

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
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a b à CPUs
August 27, 2011 8:13:33 PM

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
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a c 138 à CPUs
a b V Motherboard
August 28, 2011 12:07:54 AM

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
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August 28, 2011 8:35:16 AM

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:


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August 28, 2011 8:37:02 AM

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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