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cpu overheat or broken sensors?

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Name: arseguitarse
Date: July 17, 2009 at 00:33:09 Pacific
OS: Windows XP
Subcategory: Cooling
Comment:

My cpu idles around 42 Celsius, but right when i start doing something cpu intensive the temperature jumps up to 53 in the same second then just keeps climbing up to temperatures of 75 and higher. My system doesn't crash when it gets that hot and I have an Athlon 64 4000+, so what do you guys think? And it's not overclocked



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Response Number 1
Name: kx5m2g
Date: July 17, 2009 at 05:51:18 Pacific
Reply:

What are you using to check the cpu temperature ? I would check it in the bios right after doing something cpu intensive.


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Response Number 2
Name: arseguitarse
Date: July 17, 2009 at 11:52:17 Pacific
Reply:

i'm using SIW and Sensor's View. By the time i actually get to the bios the temperature is already normal again.


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Response Number 3
Name: arseguitarse
Date: July 17, 2009 at 12:16:26 Pacific
Reply:

I've also noticed that my cpu fan speed doesn't change under load, it's possible that my cpu fan is good enough combined with the fact that my motherboard (Geforce 6100-m9) doesn't seem to change the cpu fan speeds from what i've heard.


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Response Number 4
Name: jam
Date: July 17, 2009 at 13:43:28 Pacific
Reply:

"By the time i actually get to the bios the temperature is already normal again."

Then the readings you're getting aren't inaccurate. There's no way the CPU temp would drop from 75C to 42C in less than a minute, unless it takes you an extraordinarily long time to reboot & access the BIOS?

Try another monitoring program.

"it's not overclocked"

That's a shame. The board is an excellent overclocker...you should be able to hit 3.0GHz with that CPU.

http://www.biostar-usa.com/mbdetail...


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Response Number 5
Name: arseguitarse
Date: July 18, 2009 at 10:10:58 Pacific
Reply:

Good point, I decided to try something out, I set the BIOS shutdown temperature to 60 and i ran a cpu stress test with SIW, Speedfan, and Sensor's View on to test the accuracy and all three sensor's peaked at around 70 or so and my system did not automatically shut down.


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Response Number 6
Name: arseguitarse
Date: July 18, 2009 at 10:21:29 Pacific
Reply:

I've also tried using HW Monitor and Core Temp and still the same result, the temperature will climb to around 70/75 then as soon as i hit stop on the cpu stress test it will go down to 50 within 10 seconds


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Response Number 7
Name: kx5m2g
Date: July 18, 2009 at 10:27:24 Pacific
Reply:

How long did all three sensor's stay peaked at around 70 or so ? It seems somewhat unusual that all of these temperature monitoring programs would be that inaccurate. Real temp is another good program to try, but I doubt that it would give anything different.


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Response Number 8
Name: SkipCox
Date: July 18, 2009 at 14:21:29 Pacific
Reply:

The only times I've seen temps vary 20-25°C in a few seconds, the heatsink wasn't making good contact with the processor. Happened once with a S370 and a few times on Socket A boards.

I'd double check the heatsink installation...sure can't hurt.

Skip


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Response Number 9
Name: mr clark25
Date: July 22, 2009 at 17:59:54 Pacific
Reply:

if you take the heatsink off, make sure you reapply the thermal compound.


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