T42 fan replacement

[GLE3]

Hi all, looking for a little help with a 'long' fan replacement. Can I use thermal paste for both the processor and video chip? After taking the fan off it looked like there is two different materials as the processor paste looked grey and the video chip 'paste' had a black look to it... Is it the same stuff? Thanks in advance for any help..

Maybe the video chip had a thermal pad?

[ajkula66]

Yes you can use the same thermal compound for both the CPU and GPU.

[Peptate]

AFAIK, but the long fan came with a thermal pad for the GPU and these can be replaced with a copper shim.

[Adda]

Best way to go about it is.

1. remove pink pad and black goo from cooler.

2. remove heatshield from GPU using dental floss, just cut it off as you would a slice cheese, clean off old thermal compound.

3. cut out a piece of aluminum or copper same size as the GPU core.

4. file or sand the metal piece so that it has the right thickness to even out the height difference between GPU and video memory.

5. bend the cooler so that the GPU pad fits the lower profile of the video chip, while keeping good contact with the CPU.

6. apply cooler paste to CPU, GPU and video memory.

7. put the metal piece on the GPU and put cooler paste on top of it.

8. mount the cooler and enjoy much lower temps then would have otherwise been possible.

A pic of the result:
http://cdn.head-fi.org/2/26/26cb88f7_AUT_6501.jpeg

Pic of GPU without heatshield, GPU is in the middle sorrounded by memory chips:
http://www.pc-erfahrung.de/fileadmin/Gr ... ity_01.jpg

Temps don't go above the low 70C for my T43p no matter the load, before the mod, the GPU would quickly reach above 90C full load.
The reason why R9600 and FGL GPU's get hot, is that the heatshield doesn't touch the GPU core, there is a gap filled with thermal compound.
On late generation V3200 chips the issue was fixed as they used lower profile video memory, but the cooler remained the same, so the fit was obviously compromised.
Late generation V3200 chips still reach the low mid 80's under load.