Intel Core i5 or Lynnfield Quad works at 2.93GHz
 

Lynnfield, a CPU that might end up with Core i5 brand name in its fastest iteration, will end up at 2.93GHz. This is the frequency of all quad cores. With the little help of Turbo boost technology the same CPU will run at 3.6GHz but this is the maximum single core frequency you should expect to see.

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