Cortex-A73 Overview

The Cortex-A73 processor is the most-efficient high-performance processor that implements the ARMv8-A architecture, which can be paired with the Cortex-A53 or Cortex-A35 processor in a big.LITTLE configuration for mobile applications. The Cortex-A73 processor cluster has one to four cores, each with their L1 instruction and data caches, together with a single shared L2 unified cache.

  • Cortex-A73 Technical Reference Manual

    For system designers, system integrators and programmers who are designing a SoC, the Technical Reference Manual is the go-to resource. Coming Soon
  • Cortex-A Series Programmer's Guide for ARMv8-A

    Common to all Cortex-A series processors, this programmer's guide is useful for assembly and C language application development for ARMv8-A.

    Programmer's Guide for ARMv8-A
  • Cortex-A73 Software Optimization Guide

    For software engineers and programmers, the software optimization guide examines the performance characteristics of instructions in detail. Coming Soon
  • Development Tools for Cortex-A

    ARM and our partners provide specialist code generation, debug and analysis tools for software development on Cortex-A series processors, such as DS-5 Development Studio.

    Development Tools
  • Porting to ARM 64-bit

    If you are migrating from an ARMv7 architecture based design to the ARMv8 64-bit A64 instruction set, we provide a porting guide to help you.

    Porting to ARM 64-bit


Architecture ARMv8-A
Multicore 1-4x Symmetrical Multiprocessing (SMP) within a single processor cluster, and multiple coherent SMP processor clusters through AMBA 4 ACE technology
ISA Support
  • AArch32 for full backward compatibility with ARMv7
  • AArch64 for 64-bit support and new architectural features
  • TrustZone® security technology
  • NEON advanced SIMD
  • DSP & SIMD extensions
  • VFPv4 floating point
  • Hardware virtualization support
Debug & Trace CoreSight™ SOC-400

Key Features

Efficient Out-of-Order Pipeline

Microarchitecture performance and power improvements to maximize efficiency of the 2-wide out-of-order pipeline. Achieve highest peak and sustained performance at frequencies up to 2.8GHz in advanced process technology for Premium smartphones.

State-of-the-art Branch Prediction and Power-Optimized Instruction Fechting

Advanced sophisticated prediction algorithm with power-optimized 64kB instruction cache.

High-performance Memory System

Full out-of-order dual-issue load/store capability combined with up to 64kB data cache. Enhanced data prefetching with automatic complex pattern detection.

Optimized mobile and consumer feature set

Combined with Cortex-A53 or Cortex-35 in big.LITTLE configuration using ARM CCI interconnect for high scalability.


The Cortex-A73 is the most efficient and highest performance application processor. It delivers 30% more performance than the Curtex-A72 current devices in a mobile power envelope for the best user experience.

The Cortex-A73 supports the ARMv8-A architecture and is specifically optimized for mobile and consumer workload. It improves sustained performance and power efficiency by 30% over previous generation. Implementing at up to 2.8GHz, the Cortex-A73 increases the performance to power large screen mobile devices.

The Cortex-A73 is also the smallest premium ARMv8-A processor. The Cortex-A73 delivers the highest single-thread performance in the smallest area footprint. Especially in big.LITTLE, it scales efficiently into mid-range smartphones and consumer devices to boost the user experience.