Apple A11 Bionic’s Neural Engine

Mentions here and here, practically no architecture details.

  • “600 billion operations per second”
  • “Two parallel cores”
  • Used for FaceID, Animoji, ARKit
  • Part of Image Signal Processor
  • Development started 3 years before A11 release

A11 Bionic itself has:

  • 64-bit ARM-based SoC, manufactured at TSMC, 10nm FinFET process
  • 6 ARM cores: 2 high-performance¬† + 4 high-efficiency, can use all 6 simultaneously
  • On-chip image processor supporting computational photography

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