Finding an extra 21MHz on the core clock is nothing to sneeze at. Every little bit helps if you are looking to turn out some serious FPS. The appeal of the Giant II will be more to the mod crowd in my mind. This thing is so wild looking, it is absolutely begging to be shown off through a case window or in a clear acrylic case. The difficulty in installing the cooler was minimal. The instructions were straight forward and easy to understand.