Cpu Thermal Material

I recently purchased a compaq C702 with a celeron 530M processor and GL960 chipset, just to know whether it is soldered to motherboard i disassmebled the whole laptop and succesful removed the processor and put it back in place. ..if somebody could tell me,

firstly do i needed to put the thermal material again after this reinstalltion

secondly where to put that thermal material if i upgarde it with a T5450

thirdly my cpu is showing temp of 55 C after reinstallation of CPU.......Is it normal?

 

What? You put everything back the way you found it. 55c/131f is a little high at idle for that but by no means a problem the max temp on that CPU I believe 100c/212f. You could apply thermal paste to the CPU to lower temp.

 

But powerpack where the thermal paste is to be aplied

 

Where the CPU meets the Heatsink.

 

http://www.arcticsilver.com/pdf/appinstruct/as5/ins_as5_amd_dual_wcap.pdf

 

It would really be in your best interest to put the thermal paste back in. It's job is to fill all the microscopic voids in both the heatsink and CPU case which represents air gaps. Air has a pretty terrible thermal conductivity, the point of the paste is to fill those air gaps with something much more conductive.

That said, your temps aren't too bad now, but I would keep an eye on them at a minimum if you can't put the thermal paste back in right away.

To apply the thermal paste, you should check out the link above. You can apply it to either the heatsink or the CPU, and there are different methods to do this. The key is to put on as little as possible because you want to achieve as much metal to metal contact as possible since that will give you the best heat transfer.

Hope this helps!