Our Most Powerful and Efficient Mid-Range Processor

Cortex-A55, built on DynamIQ technology, is designed for extreme scalability in constrained environments. It features the latest Armv8-A architecture extensions that introduce new NEON instructions for machine learning, advanced safety features and more support for Reliability, Accessibility and Serviceability (RAS). 

Features and Benefits

Broad Market Application

With a flexible design that meets requirements across multiple markets, the Cortex-A55 processor delivers greater performance, power efficiency and safety over its predecessor.
High Performance

Microarchitecture improvements provide more responsive user interactions for touchscreens and higher reaction speeds in autonomous automotive applications, for longer periods of sustained performance.
Efficient Processing

Fine-grained power control ensures Cortex-A55 delivers high performance with superior efficiency.
Memory Subsystem Designed for High Bandwidth

Configurable L2 cache achieves more than 50% reduced latency for memory accesses. L3 cache shared across up to eight Cortex-A55 CPUs within a single cluster.
Use Cases

Where Innovation and Ideas Come to Life
Mobile Computing

Smartphones, laptops, and wearable devices need the right performance at the right power efficiency to satisfy the demands of consumers. The Cortex-A55 is designed to deliver top performance in constrained environments, making it ideal for mobile devices.

Learn More
Automotive

The car is the most complex electronic device many of us will buy, with more than 100 electronic control units soon to become the norm for most vehicles. More than 85 percent of infotainment systems and many under-the-hood applications are built with Arm-based chips.

Learn More

Talk with an Expert

Find out how Cortex-A55 can boost the responsiveness of your touchscreen-based devices.

Contact Us
Related Products and Services

Explore More Options and Features

Cortex-A Processor

Cortex-A Processor

The Cortex-A processor series provides a range of solutions for devices undertaking complex compute tasks, such as hosting a rich operating system platform and supporting multiple software applications.

Learn More
Mali Graphics & Multimedia Processors

Mali Graphics Processors

Mali GPUs include both graphics and GPU compute technology to offer a diverse selection of scalable solutions for low-power, high-performance smartphones, tablets, and digital TVs.

Learn More
System IP

System IP

Arm System IP enables system designers to configure and build high-performance, power-efficient SoCs while further differentiating with Arm processors and their own IP elements integrated via industry-standard AMBA interfaces.

Learn More
Architecture and Technologies

A Foundation of Silicon Success

Arm-based chips, device architectures, and technologies orchestrate the performance of everything that makes modern life possible — from smartphones to agricultural sensors and from medical instruments to servers.

Cortex-A55 Resources

Everything you need to know to make the right decision for your project. Includes technical documentation, industry insights, and where to go for expert advice.


Safety Certificate

Tools

Industry News

Visit Arm Developer