Overheating or not?

[deckarudo]

Hi,

I've changed my geniune T7100 @ 1,8Ghz for a T7500 @ 2,2 Ghz. To do so I've cleaned the old blue-gray thermal past covering the CPU and GPU and applied Arctic Silver ceramic grease on them.

Now here are my temperatures on idle:

GPU: ~60° (when I stress it a litte, it comes to 70°)
CPU: 48 to 60°

As I did not check those temperatures before I switch the CPU, I can't tell if something went wrong

Thanks for your help!

Guillaume

[RealBlackStuff]

It'll take 24 hours of 'working' before the full effect of that grease will show.
So leave it on overnight and measure again tomorrow.

[mediasponge]

If there was any thermal rubber foam in there, make sure it is still contacting surfaces on both sides. Lack of thermal foam can lead to damage. The service manual lists 2 different applications for thermal compound, depending on whether you have integrated graphics or discrete graphics. The thermal foam would be elsewhere, perhaps on the backside of the motherboard. Ceramique does need a few good heat cycles to be fully effective. I don't think you need to stress it to 70 C for that, it should work to let it just idle. It needs to be up to temperature a few hours, then get heat cycled, so on a few hours, off a few hours repeated until the temps come down.

[jdhurst]

My T8300 runs GPU at about 55 degrees C most of the time (only rarely more) and my CPU runs normally at about 34 degrees C. It gets warmer under heavy load. So your GPU looks normal, but your CPU seems a tad warm. See what it is at idle. ... JDH

[madkat]

R61 with T7250 @ 2.0 - runs at idle at around 34 degrees - and a maximum of 65 degrees under heavy load.

I have a tread about overheating in this model - found out that i had the wrong fan (a T61 weak fan). http://www.thinkpads.com/forum/viewtopi ... =5&t=81587
But mine has an Intel GPU (much cooler than Nvidia)