SiFive RISC-V Core IP

SiFive Intelligence

Building Solutions for Modern AI/ML

AI/ML Challenges

Commonly used embedded control processors lack compute resources needed to execute inference workloads efficiently. Dedicated accelerators can work well for CNN layers, however:

  • They may not work for modern neural networks
  • They can be difficult to program, may have immature tools
  • In-house solutions may be expensive to maintain

The SiFive Intelligence™ solution is a better option: A high-performance control processor with scalable vector compute resources, all based on an open instruction set.  SiFive Intelligence is a scalable platform to meet ML processing requirements, from extremely low power to high-performance compute.

The SiFive Solution

SiFive Intelligence is an integrated software + hardware solution that addresses energy efficient inference applications. It starts with SiFive’s industry-leading RISC-V Core IP, adds RISC-V Vector (RVV) support, and then goes a step further with the inclusion of software tools and new SiFive Intelligence Extensions, vector operations specifically tuned for the acceleration of machine learning operations. These new instructions, integrated with a multi-core capable, Linux-capable, dual-issue microarchitecture, with up to 512b wide vectors, and bundled with TensorFlow Lite support, are well-suited for high-performance, low-power inference applications.

Learn more about the first announced SiFive Intelligence product, the SiFive Intelligence X280.

Software + Hardware Machine Learning Solutions

SiFive Intelligence Solution Combines Hardware and Software


Support for popular machine learning frameworks

  • Ease of deployment
  • Generality to new ML ops
  • Portability


Family of ML processors with RVV

  • Built on silicon proven SiFive architectures
  • New SiFive Intelligence Extensions

SiFive Intelligence Extensions

Automatically Handle Legacy Arm Neon Code

New SiFive Recode tool creates SiFive RISC-V Vector code from legacy Arm® Neon™ code

Protect your existing software investment; migrate with confidence

SiFive Intelligence Delivers Full TensorFlow Lite Support

Intelligence Series Highlights

Key Features

  • Fully-compliant with the RISC-V ISA specification
  • Up to 8+1 coherent high-performance RISC-V application processors
  • Supports an in-cluster coherent combination of application processors with real-time processors (U and S cores)
  • Low latency caches
  • High -performance L1 memory microarchitecture
  • Physical memory protection
  • Private cache /cache locking capability for mission critical computing


  • AI/ML Inference and Training
  • Enterprise Switching/Routing/Storage, Smart NICs
  • Edge Analytics, Big-Data Analytics
  • Autonomous Machines
  • Edge Compute
  • 5G Infrastructure/Base Stations