Apple's Metal demo at WWDC 2018.
Apple's Metal demo at WWDC 2018.
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Apple will enable up to 4 external graphics cards in macOS 10.14 Mojave

Apple said Monday that it will enable external graphics processing unit (GPU) support via its Metal applications programming interface (API) across the Mac platform.

The Metal API enables developers to access the hardware for performance-hungry apps such as games and visual programs, and now Metal can enable games and other apps to take full advantage of the GPUs available via external graphics cards. It can now tap as many as four now.

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Written by

Dean Takahashi

Dean Takahashi is editorial director for GamesBeat. He has been a tech journalist since 1988, and he has covered games as a beat since 1996. He was lead writer for GamesBeat at VentureBeat from 2008 to April 2025. Prior to that, he wrote for the San Jose Mercury News, the Red Herring, the Wall Street Journal, the Los Angeles Times, and the Dallas Times-Herald. He is the author of two books, "Opening the Xbox" and "The Xbox 360 Uncloaked." He organizes the annual GamesBeat Next, GamesBeat Summit and GamesBeat Insider Series: Hollywood and Games conferences and is a frequent speaker at gaming and tech events. He lives in the San Francisco Bay Area.