The Apple A12X first appeared in the 3rd-generation iPad Pro, announced on October 30, 2018. The chip is an 8-core variant of the A12 with 4 high-performance cores and 4 high-efficiency cores. Apple states that the A12X has 35 percent faster single-core CPU performance and 90 percent faster overall CPU performance than its predecessor, the Apple A10X.
The design of the A12X is also used in the newer Apple A12Z. According to an analysis of the processor floorplan by technology patents firm TechInsights, the A12Z is the same as the A12X chip, but with an extra GPU core enabled. AnandTech theorized that the A12Z is a re-binned variant of the A12X, which is a common practice in semiconductor manufacturing, allowing finished units of the same design to be set to higher specifications as the quality and quantity of manufacturing yields improve over time.
Products that include the Apple A12X
- iPad Pro (3rd generation) 11 and 12.9-inch
- "New iPad Pro with all-screen design is most advanced, powerful iPad ever", Apple Inc., October 30, 2018.
- Looking at the Apple A12Z Bionic System on Chip | TechInsights.
- Miller, Chance (March 26, 2020). Report claims new iPad Pro's A12Z Bionic chip is just a 'renamed A12X with an enabled GPU core' (en-US).
- A12Z Chip in iPad Pro Confirmed to Be Same As A12X, But With Extra GPU Core Enabled (en) (April 13, 2020). Retrieved on April 14, 2020.
- Shilov, Anton. Apple Unveils New iPad Pro: A12Z Bionic, Camera w/ Depth Sensor for AR, Keyboard w/ Trackpad.