on 2012-05-09 8:30 Michael_google gmail_Gersten wrote
My MacBook Pro will attempt to only use the physical cores normally, turning on the logical ones only in very high usage, so I'm guessing that they are not as fast as real cores.
Wikipedia has a detailed article on how this works; i don't remember all the details, but basically it trades off higher clock speeds for more parallelism, so whether to activate more cores depends on the task
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