HT202043: Set graphics performance on MacBook Pro
Learn about Set graphics performance on MacBook Pro
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Helpful answers
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Sep 6, 2016 3:03 PM in response to jugutierby Side_Step_Society,By default, an external display will always engage dedicated graphics. "About this Mac" will reveal which GPU is in use. Or, you can look at an app called gfxcardstatus to show which GPU is in use, and provide some control over which is used.
