Apple A19 Pro CPU Architecture

CPU Architecture Overview

The Apple A19 Pro features a sophisticated 6-core CPU architecture with a balanced combination of high-performance and efficiency cores.

Core Configuration

Performance Cores

• Number of Cores: 2
• Clock Speed: Up to 4.26 GHz
• L2 Cache: 16MB per core

Efficiency Cores

• Number of Cores: 4
• Clock Speed: 2.60 GHz
• L2 Cache: 6MB per core

Cache Hierarchy

Total Cache Configuration

• L2 Cache Total: 22MB (16MB + 6MB)
• System Level Cache (SLC): 32MB

Comparative Advantage

The A19 Pro’s system-level cache is significantly larger than the A19’s 12MB SLC, providing substantial performance benefits.

Architectural Enhancements

Front-End Improvements

• Enhanced front-end bandwidth
• Advanced branch prediction capabilities on performance cores

Performance Benefits

The expanded cache configuration enables:

• Faster data access
• Improved multi-tasking performance
• Enhanced performance in high-load scenarios
• Better power efficiency

Technical Significance

This architectural design represents Apple’s continued focus on optimizing both peak performance and power efficiency, particularly important for the demanding applications running on iPhone 17 Pro series devices.