Because newegg doesnt always have the best prices on items.....E3 supposedly overclock better, but I doubt thats their reasoning. Its just priced higher. Ewiz is good. Their chips are the newer ones, which apparently do not OC as well. 2.5ghz is still fine though imo. $130 is a great. Still dropping ;p Personaly, if youre looking for an oem proc right now to OC, id wait for some reviews of the opertons.