i own one! (See signature). it is just a better quality chip that they selected and have heavily tested. every chip is different. some overclock higher/lower than others. with superclocked, they overclocked it at the factory and made sure it can handle the higher clock speeds. takes out the process of you overclocking it. still some headroom to overclock more. they are worth it in my opinion. its something like 20 extra bux for saving 5+ hours of finding a 100% stable overclock and it weeds out the chips that didnt handle it well.