CPU Thermal Throttling Intel LGA775 ?


Hi,

I have a feeling that the CPU in my machine may not be performing at its best because its being thermal throttled.  Is there an easy way to confirm or reject this ?

andyw27Asked:
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BjornEricssonCommented:
Many thermal sensors are directly connected to the thermal diode on the CPU and then there is a thermal microcontroller controlling this. Normally this is via the SMBus. Normally the sensor reads the thermal diode on a Pentium CPU every 0.125 seconds.
The best way to check if it is thermal controlled or not is to stress test it, i.e run heavy applications / benchmark and use a multimeter to measure the bus and you will see if it is thermal or not, most Pentium CPU's are throttled which means that you can still use a P4 after you have removed the CPU fan for instance compared to an AMD which melts.
I think I have seen some review regarding this at Tom's Hardware a couple of months ago.
Hope this helps somehow,
/B


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stockhesCommented:
Here is a little software tool that can display your CPU speed

http://www.lavalys.com/products.php?lang=en

click the PC/ overclock botton and view your CPU speed online





 
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stockhesCommented:
*Button
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BjornEricssonCommented:
stockhes,
Must be best comment ever made in EE :)
/B
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stockhesCommented:
Börjer om from början

Here is a little software tool that can display your CPU speed

http://www.lavalys.com/products.php?lang=en


In everest:

click the PC/ overclock button and view your CPU speed onscreen

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stockhesCommented:
Björn

I also like this one

and use a multimeter to measure the bus

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joey_the_assCommented:
Toms Hardware did an article about this just recently

http://www6.tomshardware.com/cpu/20041114/index.html

Basically they found out that if you clean off the thermal tape originally on the heatsink and replace it with a cheap thermal compound your CPU may get hot enough to throttle itself back.  If you replace the thermal tape with a high quality silver thermal compound that probably won't happen.

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BjornEricssonCommented:
Well, you know, going the only way when it comes to measuring up :-)
Mjukvara? Lite för enkelt :)   <-- (Software, A bit to simple) just in case you wouldn't know Swedish..
/B
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stockhesCommented:
Sorry for spam

I actually know something from Sweden called Ericsson, it was'nt a bear(Björn) it was something Lars Magnus created.:-)
It is famous for the three blue sausages in the logo. Formerly known as L.M Ericsson, now just Ericsson. Most people know as a part of SONY-Ericsson(mobilephones). For 25 years i have made my living supporting Ericsson stuff.

http://www.ericsson.com

this link is only for Björn and other swedes

http://www.ericsson.com/se/
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BjornEricssonCommented:
And the three sausage stuffy is also incorporated in to a rather popular industry standard at the moment.
It is named after the king who united Denmark and Sweden, Harald Blåtand, a.k.a  Bluetooth.
/B
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