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Intel Xeon processors dominate the semiannual top 500 list overall.
Two supercomputers--one of them the 66th fastest in the world at present--will power the Wolfram Alpha site for search, calculation, and data crunching.
Intel's Nehalem-architecture chips will now try to make their mark in servers after debuting in desktops in November.
Faster models will arrive in the fourth quarter; first servers using the chips are due in September.
The next several weeks could dictate whether significant changes are required to get the company back on track and well positioned against Intel.