It's too complicated to add Artic Silver to the M6400 ?

I've noticed that it's not that easy to get access to the CPU and GPU in the M6400, on the M4400 it's much easier, anybody has done it before ?, thanks

 

The guide should be available on Dell's website. Even if it is tedious, just take your time and it should be easy to do no problem.

 

http://support.euro.dell.com/support/edocs/systems/late6400/en/sm/html/cpucool.htm#wp1179839

I hope this helps. It sounds very easy to me.
I tested Arctic Silver 5 with my D800, but Coollaboratory Liquid pro was better (now in my E6500).

 

I don't think this or any other pic of the E6400 will help for the M6400

I applied arctic silver to both the M4400 and the M6400. The M4400 is a lot easier because you have a direct access to the cooling system. With the M6400 you need to deassamble the display and the palmrest before you can work on the cooling system. Take a look in the service manual. It describes every step pretty good. With some time you can do this by yourself.

Like like Heinz said, perhaps you think about using Coolaboratory Liquid, it's even better than Arctic Silver (but you need to be a bit more careful, because it's conductive).

 

Yeah, removing the heatsink on the M6400 is a significantly more time consuming process: http://support.dell.com/support/edocs/systems/wsm6400/en/sm/cpucool.htm#wp1179839. I don't think it's necessarily difficult or complicated, though; it just takes a bit of time. If your M6400 is running fine, there probably isn't much reason to take it apart, but if you're looking for a cooler, quieter laptop, it may be worthwhile.