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Computers tend to collect a bunch of dust inside their case over the time and notebooks are no exception here. Related to notebooks the air input fans, which are part of the thermal system, do suck in dust and dirt particles over the time. Especially those notebooks which take the cooling air in from the bottom case of the notebook, tend to collect dust much quicker. The result is, that the fans, CPU and GPU heatpipes etc. do get blocked/plugged and thus there is often no more sufficient air circulation inside the case for cooling the internal notebook parts.
To give you an idea how effected parts will look over the time, I show you some pics from the CPU heatsink of a third party notebook here, BTW, it's no Thinkpad...
...as can be seen here, the input canal of the heatsink is totally blocked with collected dust....
...and there are also burned on leftovers from a CPU thermal pad on the heatsink (on the CPU there are leftovers from the thermal pad too).
So this notebook needed some massiv cleaning and heatsink reworking in order to opperate again under more normal temperature conditions. Before this notebook gots very hot, especially it's CPU/GPU and thus the whole notebook didn't operated well any more. - Above are shown some materials which have been used to clean this notebook and to rework it's CPU heatsink etc. It's also visible what sort of dust ribbon was taken out of the heatsink. The fans etc. do also collect dust and have to be cleaned carefully.
When things have been cleaned up and the heatsink has been carefully sanded, things do look much better now.
Next step is to apply some thermal paste onto the heatsink to fill the fine rills from the sanding and then to place thermal paste for the CPU either on the CPU itself or the heatsink (this depends on where it can be better placed on for the CPU). Since this notebook's heatsink has marked regions for the CPU surface I've choosed the heatsink.
After the whole cleaning process has been performed and the notebook reassembled, the notebook has been setup to run for some hours, so the thermal paste gets warmed up and fits into the fine-grained rills of the heatpipe etc. - The result of this cleaning process was a much cooler operating notebook, which afterwards behaved again perfectly normal with low operation temperatures.
IMPORTANT NOTE: those who have still warranty for their ThinkPads should bring their notebook to the service for such a cleaning procedure. Also unskilled people, when in trouble, should better contact and bring their notebook to the Lenovo service. - So only skilled and experienced people should perform such tasks themself for their Thinkpads, since notebooks have a bunch of very sensible parts inside, which in turn have to be handled with a lot of care.
Finally: I'll hope the above will give at least a little idea of what is often the cause of unusual higher notebook CPU/GPU tempratures and what in turn is needed from time to time to fix these issues.
Message Edited by vkyr on 03-12-2008 01:02 PM
To give you an idea how effected parts will look over the time, I show you some pics from the CPU heatsink of a third party notebook here, BTW, it's no Thinkpad...
...as can be seen here, the input canal of the heatsink is totally blocked with collected dust....
...and there are also burned on leftovers from a CPU thermal pad on the heatsink (on the CPU there are leftovers from the thermal pad too).
So this notebook needed some massiv cleaning and heatsink reworking in order to opperate again under more normal temperature conditions. Before this notebook gots very hot, especially it's CPU/GPU and thus the whole notebook didn't operated well any more. - Above are shown some materials which have been used to clean this notebook and to rework it's CPU heatsink etc. It's also visible what sort of dust ribbon was taken out of the heatsink. The fans etc. do also collect dust and have to be cleaned carefully.
When things have been cleaned up and the heatsink has been carefully sanded, things do look much better now.
Next step is to apply some thermal paste onto the heatsink to fill the fine rills from the sanding and then to place thermal paste for the CPU either on the CPU itself or the heatsink (this depends on where it can be better placed on for the CPU). Since this notebook's heatsink has marked regions for the CPU surface I've choosed the heatsink.
After the whole cleaning process has been performed and the notebook reassembled, the notebook has been setup to run for some hours, so the thermal paste gets warmed up and fits into the fine-grained rills of the heatpipe etc. - The result of this cleaning process was a much cooler operating notebook, which afterwards behaved again perfectly normal with low operation temperatures.
IMPORTANT NOTE: those who have still warranty for their ThinkPads should bring their notebook to the service for such a cleaning procedure. Also unskilled people, when in trouble, should better contact and bring their notebook to the Lenovo service. - So only skilled and experienced people should perform such tasks themself for their Thinkpads, since notebooks have a bunch of very sensible parts inside, which in turn have to be handled with a lot of care.
Finally: I'll hope the above will give at least a little idea of what is often the cause of unusual higher notebook CPU/GPU tempratures and what in turn is needed from time to time to fix these issues.
Message Edited by vkyr on 03-12-2008 01:02 PM
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