I used to do a lot of research on the core 2 duos and even built an old e6600 and e6700s computer for someone. Since then I know they came out with the e6750 which were just supposed to be slightly better versions of their previous counterparts. However Ive been away for a while and now see theres all kinds of processors like the e8800 and e7200 models ( although the e7200 model is below the clock speed of a e6700 ). Can anyone give me a brief run down on these new models and how they compare? Also why does the smaller the nm number = the better and why?