For the past year I have been running the stock AMD Phenom x6 cooler and that thing was horrible. It was load under load and wouldn't do a great job keeping my rig cool. I would peak around 50C under full load with that old thing. Recently one of my friends went water cooled and he sold me his frio. Now that I have it installed I was able to overclock and still achieve lower temps on full load than I did with the stock cooler.