![]() More cores, more performance What's in a core?Ĭore i7 debuted first in 2008 with a 1.6GHz clock rate at the lower end of the spectrum, ramping up to as fast as 4.4GHz more recently. Core i7 processors are used to power the high-end 15-inch MacBook Pro with Retina Display, while Core i5 processors are used in a variety of speeds for the less expensive 13-inch MacBook Pro with Retina Display, as well as the 11-inch and 13-inch MacBook Air models.Īpple doesn't currently utilize the lower-end Core i3 processor in its notebook or desktop lineup, but plenty of Windows OEMs certainly do - if you happen to see an advertisement for a system with a price that appears too good to be true, there's a good chance it may powered by something from the Pentium, Celeron or Core i3 family. One of the easiest ways to categorize Intel Core processors is to look at how Apple has implemented them into its line of popular notebooks. (Intel abandoned the previous star rating system in favor of this numeric designation.) Despite their names, Core i3, Core i5 and Core i7 do not signify how many processing cores each has - rather, they are simply designations that classify how many stars Intel would assign to a given chip, based upon expected performance.
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