Anybody has used 3M Thermal double-sided tapes?

Hey everyone. Has anyone already had their hands on 3M thermal tapes (commonly used on RAM heatsinks)? What is its actual color?

I recently got my hands on a CK5000 heatsink set, that came with "3M 9448" thermal tapes on the heatsinks already. I'm thinking of doing a mod with my laptop's GPU's thermal assembly using these, and when I saw the thermal tapes I wasn't convinced those were thermal tapes, since they kinda look like the generic black double-sided tapes. I got to the process of stripping two of the eight heatsinks of the tapes already (and it was hard as hell!) but I'm hesitating on stripping the remaining six (since I actually won't be using all of them).

What I'm planning instead is to use Jetart's Nano-Diamond thermal compound (they were sticky enough, I tested it) to attach the heatsinks over the heat plate for the GPU (since it was actually just a plain PLATE) in hopes of having it dissipate heat more efficiently.

Well the questions are, would using the tapes be alright already, or would it be more efficient using actual thermal compound? And is 3M's thermal tape really the black tape I'm looking at here? It has a white paper thingy but once you strip it to stick it already, the adhesive itsef is black.

Help would be appreciated.

 

You would be better off with this

http://www.arcticsilver.com/arctic_alumina_thermal_adhesive.htm

 

I also got my eye on that but it's not locally available...besides I'm looking for something that wouldn't be permanent since I'm preempting the few months left that my notebook would fail on me and I have to undo the mods I will be doing to it..