This processor stepping boasts a lot of serious improvements: it supports new power-saving technologies, offers more adequate and stable thermal sensors, overclocks better and is more economical. All these innovations are significant enough for us to strongly advise that you always pay special attention to the processor stepping of the 45nm CPUs you buy to make sure that you only get the latest E0 stepping. Especially, since not only Core 2 Duo E8600, but also other Wolfdale processors with lower frequencies and prices will soon switch to new cores.