Apple A12X

The Apple A12X Bionic is a 64-bit system on a chip (SoC) designed by Apple Inc. It first appeared in the third-generation iPad Pros which were announced on October 30, 2018.[4] The A12X is an 8-core variant of the A12 (four big cores, four small cores) and Apple states that it has 35 percent faster single-core CPU performance and 90 percent faster overall CPU performance than its predecessor, the Apple A10X.[4] The A12X's design is also used on the Apple A12Z.[5]

Apple A12X Bionic
General Info
LaunchedOctober 30, 2018
DiscontinuedMarch 18, 2020
Designed byApple Inc.
Common manufacturer(s)
Product codeAPL1083[2]
Max. CPU clock rateto 2.49[3] GHz
Cache
L1 cache128 KB instruction, 128 KB data
L2 cache8 MB
Architecture and classification
ApplicationMobile
Min. feature size7 nm[4]
MicroarchitectureVortex and Tempest
Instruction setA64 – ARMv8.3‑A
Physical specifications
Cores
GPU(s)Apple-designed 7-core[4]
Products, models, variants
Variant(s)Apple A12, Apple A12Z
History
PredecessorApple A10X
SuccessorApple A12Z

Design

The A12X features an Apple-designed 64-bit ARMv8.3-A octa-core CPU, with four high-performance cores called Vortex and four energy-efficient cores called Tempest.[4][1] The Vortex cores are a 7-wide decode out-of-order superscalar design, while the Tempest cores are a 3-wide decode out-of-order superscalar design. Like the Mistral cores, the Tempest cores are based on Apple's Swift cores from the Apple A6, and are similar in performance to ARM Cortex-A73 CPU cores.[6][7] It is Apple’s first SoC with an octa core CPU.[1]

The A12X integrates an Apple-designed hepta core graphics processing unit (GPU) with twice the graphics performance of the A10X.[4] Embedded in the A12X is the M12 motion coprocessor.[8] The A12X includes dedicated neural network hardware that Apple calls a "Next-generation Neural Engine".[4] This neural network hardware, which is the same as found in the A12,[1] can perform up to 5 trillion operations per second.[4]

The A12X is manufactured by TSMC using a 7 nm FinFET process, and it contains 10 billion transistors[1][4] vs. the 6.9 billion on the A12.[9] The A12X is paired with 4 GB of LPDDR4X memory in the third-generation 12.9" iPad Pro and the 11" iPad Pro or 6 GB in the 1TB storage configurations.[10][2]

Products that include the Apple A12X
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See also

References
  1. Frumusanu, Andrei (October 30, 2018). "Apple Announces New 11" and 12.9" iPad Pros with A12X SoC". AnandTech. Retrieved October 30, 2018.
  2. "iPad Pro 11" Teardown". iFixit. November 12, 2018. Retrieved November 12, 2018.
  3. "iPad8,8 - Geekbench Browser". Geekbench. Retrieved November 12, 2018.
  4. "New iPad Pro with all-screen design is most advanced, powerful iPad ever" (Press release). Apple Inc. October 30, 2018. Retrieved October 30, 2018.
  5. https://www.techinsights.com/blog/looking-apple-a12z-bionic-system-chip#:~:text=Is%20the%20Apple%20A12Z%20bionic%20SoC%20just%20the%20A12X%20renamed
  6. Frumusanu, Andrei. "The iPhone XS & XS Max Review: Unveiling the Silicon Secrets". www.anandtech.com. Retrieved January 27, 2019.
  7. Frumusanu, Andrei. "Apple iPhone XS Review Addendum: Small Core and NN Performance". www.anandtech.com. Retrieved May 1, 2019.
  8. "iPad Pro Technical Specifications". Apple Inc. October 30, 2018. Archived from the original on October 30, 2018. Retrieved October 30, 2018.
  9. Summers, Nick (September 12, 2018). "Apple's A12 Bionic is the first 7-nanometer smartphone chip". Engadget. Retrieved September 12, 2018.
  10. Axon, Samuel (November 7, 2018). "2018 iPad Pro review: "What's a computer?"". Ars Technica. Condé Nast. Retrieved November 12, 2018.
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