Arctic mx 4 20g thermal compound for all coolers better than liquid metal the arctic mx 4 compound is composed of carbon micro particles which lead to an extremely high thermal conductivity it guarantees that heat generated from the cpu or gpu is dissipated quickly and efficiently superb in performance mx 4 is the best companion for overclockers and enthusiasts easy to apply with an ideal consistency the mx 4 thermal compound is very easy to use even for beginners