I had the feeling it was too much because of the annoying noise.
After reading this (its in french), I was able to compare my values:http://doc.ubuntu-fr.org/laptop_mode
My loadcycle is increasing each minute, but I am pretty sure it's not so bad now regarding the values in the article, so I will wait some months and compare again.
By the way in ubuntu french forums some msi wind users reported this bug also, especially on batterie mode, so I think it worths a check.
Thanks everybody and have a nice evening!