The new iPad Pro is out today, and ArsTechnica has a deep dive look at the iPad Pro A12X chip with the help of Apple’s Anand Shimpi and Phil Schiller. Shimpi founded the hardware review website AnandTech before being hired to work on chips at Apple in 2014. In the piece, Shimpi says that Apple is using its own customer-designed performance controller to use all eight cores of the A12X chip in the new iPad Pro.

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