Is my T43p overheating? Fancontrol?

[eleonas]

I have been running like this for a while... but I figured I would check with the experts.

My T43p seems to run very hot all the time (2668-G7U with 2.13PM Chip).

I have installed fan control, as in "Bios Mode" the fan was consistantly running at about 4100 RPM, which drives me absolutley bananas. With fan control I scale the fan RPM down to about 3300 which is acceptable as far as noise goes.

My system is pretty much always around 65C, and raising the fan speed does not really drop the speed much. This is which the laptop on a dock and the CPU set to adaptive speed. It seems like the GPU is always the hottest component, running about 3 to 5C higher than the CPU. These are my fancontrol settings.

I use 64 at level 80 which basically bumps the fan speed up (slowly scaling) to about 6500RPM's (If anyone knows how I can get straight to 6500 RPM, please let me know). I find if I put it into BIOS mode the fan will stay at about 4100 RPM's until the temperature reads about 90C, then it will only raise to about 4600RPM.

Level=47 0
Level=55 1
Level=65 1
Level=70 7
Level=75 7
Level=80 64
Level=100 128

Are these heat levels excessively high? This unit is closing in on about 1.5years now. I had to get the motherboard replaced once because the unit would "freeze" and have to be restarted by pulling out the battery (with the unit freezing a few minutes later again). I have always wondered if the failure was due to the heat.

Anyone?


Thanks!

[agarza]

Hi.

It seems your Thinkpad heatsink has lost thermal dissipation to the CPU because you say your're getting 90C.
I must say that you should open the machine, remove the fan/heatsink assembly, clean the CPU core and heatsink with high purity isopropylic alcohol, then apply a thin layer of a high-performance thermal paste (like Arctic Silver 5 or Zalman Super Thermal Grease).

If applied correctly, you should get a CPU temp of up to 75C @ Load. The GPU is normal to be 2-4C hotter than the CPU.

Here are my TPFanControl values:
Level=50 0
Level=52 1
Level=55 2
Level=60 3
Level=75 128

Please note that the 128 value makes the software switch back to BIOS Embedded Controller speeds. You should not use the 64 setting as it will have a negative effect on your heatsink (will need to be replaced sooner).

With the settings above posted, my Thinkpad will generally be 48C, the fan turning ON/OFF from time to time. Using BIOS Mode I would get a temperature of 42-43C with the fan running almost all the time.

Please note also that ambient temperatures have an impact on your CPU temp. For example, right now ambient temp is about 19-20C, the laptop has been running for 25min, CPU set to Max Performance on NHC, the CPU temp is 38C and my GPU 41C.
Laptop CPU temp on boot is 26C!

Maybe your fan is dirty also.

[eleonas]

It has been like this since day 1 (over 1.5 years ago). Could it be that I am running a t43p with the 2.13 chip, and you are running the t42?

Also note, the 90C only happens under sustained 100% load for say 25 to 30seconds + (and this is only the CPU temp).

I find my GPU about 5C higher at most times.

Thanks!

[christopher_wolf]

It has been like this since day 1 (over 1.5 years ago). Could it be that I am running a t43p with the 2.13 chip, and you are running the t42?

Also note, the 90C only happens under sustained 100% load for say 25 to 30seconds + (and this is only the CPU temp).

I find my GPU about 5C higher at most times.

Thanks!

Not really; that shouldn't happen in any T4X Series Thinkpad. Sustained loading for 25 to 30 seconds managing to get the CPU core temperature above 90°C is *not* normal. You can either check the cooling juncture, if you want, or send it in for service; I would recommend checking it out yourself first, however.

[eleonas]

10-4

Will check it out. Thanks!!