I understand that the 2.26 Nehalem processor is about equal with the 2.8 '08 model in single threaded apps and the 2.26 outperforms the 2.8 '08 in multi-threaded apps. (from the benchmarks that I've seen) But while going through the forums, some people have said, "wait until the turbo is utilized!" Or, "Wait until the Nehalem turbo boost is used." 1. What is this "turbo boost" and why isn't it being used now and represented in the current benchmarks? What sort of gains would be seen/experienced with the boost? 2. How easy is it to upgrade th Nehalem chips yourself? Especially with the new hardware architecture. Could I grab some 2.66 X 2 and slap them in there for a cheaper upgrade than the Apple upgrade? Pro's and Con's? (I've read about the 5500 i7 being the one they use because it allows for 2 processors I believe.) Thanks in advance for all of your help.