Apple A19 and A19 Pro - Wikipedia

Introduction

The Apple A19 and Apple A19 Pro are a pair of 64-bit ARM-based system on a chip (SoC) designed by Apple Inc., part of the Apple silicon series. The A19 is used in the iPhone 17, while the A19 Pro is used in the iPhone 17 Pro, iPhone 17 Pro Max, and iPhone Air.

Technical Specifications

Both chips are manufactured by TSMC using the N3P variant of their 3 nm process node. Announced on September 9, 2025, they are the successors to the Apple A18 and Apple A18 Pro processors.

CPU Architecture

Both the A19 and A19 Pro feature a 6-core CPU architecture with:

• Performance Cores: 2 cores operating at frequencies up to 4.26 GHz
• Efficiency Cores: 4 cores operating at frequencies up to 2.60 GHz

Cache Configuration

Apple A19:

• Performance cores: 8MB of L2 cache
• Efficiency cores: 4MB of L2 cache
• System-level cache: 12MB

Apple A19 Pro:

• Performance cores: 16MB of L2 cache (enhanced configuration)
• Efficiency cores: 6MB of L2 cache
• System-level cache: 32MB (expanded)

Advanced Features

The A19 Pro variant includes enhanced cache configurations and improved front-end bandwidth and branch prediction on the performance cores, providing superior performance for professional applications and demanding workloads.

Device Integration

• A19: Optimized for iPhone 17
• A19 Pro: Designed for iPhone 17 Pro, iPhone 17 Pro Max, and the innovative iPhone Air

Conclusion

These processors represent Apple’s continued commitment to advancing mobile computing performance through cutting-edge semiconductor technology and architectural innovations.