As expected, Intel officially unveiled its new Xeon nehalem yesterday, even though Apple already released and offers new Mac Pro powered by those CPUs for now several weeks. Nevertheless, one should notice some interesting points:
Apple did not used the fastest Xeon Nehalem for its high-end Mac Pro clocked at 2.93 GHz, Intel fastest Nehalem is clocked at 3.2 GHz. However, apple used models with high TDP (and corresponding prices).
The QPI bus does not have the same performance level on all Mac Pro, the bandwidth reaches 5.86 GT/s for the 2.26 GHz model, while it tops at 6.40 GT/s for models with Xeon clocked at 2.66 and 2.93 GHz.
The Xeon Nehalem features the turboboost technology that automatically overclocked the CPU if only one or two cores are used.
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