Good alternative to regular thermal greases

I wanted to attach a couple of cooling fins on the heat pipelines located in my laptop. Dewegen Fiehl normal thermal grease away. With the self-adhesive thermal pad the whole thing was not a problem. She was easy to cut and the adhesive strength is also neat. Only the heat transfer is not quite as good as with thermal greases.
My conclusion: For unique items, such as when cooling fins to be additionally attached somewhere, a good and inexpensive alternative to complex conversions. However, there is no substitute for the normal thermal grease on the GPU and CPU.