You use your money wrong.. It's obvious that you are from Denmark, therefore I can see that you're paying ALOT for that CPU. You should much rather use your money on a SSD disk, which should (correct me if I am wrong) solve "Shattrath" lag. If you're fucking rich, go with both .. but then you bought an freaking overpriced laptop .. Close to 4000 EURO and then you're better off with a cheap car to move a normal computer - if that's the reason you want a laptop.
What I am trying to say is .. use your money different .. +900 EURO for a cpu, that's just .. insane. No doubt it's good, but it's not THAT needed. I quadbox on a laptop, much worse (did I say much?) .. and I only have problems in Shattrath.