Vendor: Sifive, Inc. Category: CPU

High performance Linux-capable processor

The SiFive U84 Standard Core is a single-core instantiation of our most scalable out-of-order RISC-V application processor, and i…

Overview

The SiFive U84 Standard Core is a single-core instantiation of our most scalable out-of-order RISC-V application processor, and is capable of supporting full-featured operating systems such as Linux.

The U84 is feature rich and architected for high performance/area or watt, making it ideal for various target markets (e.g., edge/autonomous, enterprise/networking and consumer markets).

The U8 Series features SiFive’s maximum performance RISC-V Linux-capable application processor. The U8 core has a 3 issue out-of-order superscalar with support for virtual memory. The U8 Series provides unprecedented scalability and is optimized for the highest performance per watt. This makes it ideal for applications such as edge compute, 5G base stations and AR/VR/MR.

Key features

  • Fully-compliant with the RISC-V ISA specification
  • RV64GC U84 Application Core
    • 32KB L1 I-cache with ECC
    • 32KB L1 D-cache with ECC
    • 8 Region Physical Memory Protection
    • Sv39 Virtual Memory support
  • Integrated 128KB L2- Cache with ECC

Block Diagram

Applications

  • Enterprise Switching/Routing/Storage, Smart NICs
  • Edge Analytics, Big-Data Analytics
  • Autonomous Machines
  • Edge Compute
  • 5G Infrastructure/Base Stations
  • AR/VR/MR/XR

What’s Included?

  • RTL Evaluation
  • Test Bench RTL
  • Software Development Kit
  • Documentation

Specifications

Identity

Part Number
U84
Vendor
Sifive, Inc.
Type
Silicon IP

Files

Note: some files may require an NDA depending on provider policy.

Provider

Sifive, Inc.
HQ: USA
SiFive brings the power of the open source RISC-V ISA combined with innovations in CPU IP to the semiconductor industry, making it possible to develop domain-specific silicon faster than ever before. With its OpenFive business unit, the industry leaders in domain-specific silicon, SiFive is accelerating the pace of innovation for businesses large and small.

Learn more about CPU IP core

Announcing Arm AGI CPU: The silicon foundation for the agentic AI cloud era

For the first time in our more than 35-year history, Arm is delivering its own silicon products – extending the Arm Neoverse platform beyond IP and Arm Compute Subsystems (CSS) to give customers greater choice in how they deploy Arm compute – from building custom silicon to integrating platform-level solutions or deploying Arm-designed processors.

Encarsia: Evaluating CPU Fuzzers via Automatic Bug Injection

Hardware fuzzing has recently gained momentum with many discovered bugs in open-source RISC-V CPU designs. Comparing the effectiveness of different hardware fuzzers, however, remains a challenge: each fuzzer optimizes for a different metric and is demonstrated on different CPU designs.

Pie: Pooling CPU Memory for LLM Inference

Pie maintains low computation latency, high throughput, and high elasticity. Our experimental evaluation demonstrates that Pie achieves optimal swapping policy during cache warmup and effectively balances increased memory capacity with negligible impact on computation. With its extended capacity, Pie outperforms vLLM by up to 1.9X in throughput and 2X in latency. Additionally, Pie can reduce GPU memory usage by up to 1.67X while maintaining the same performance. Compared to FlexGen, an offline profiling-based swapping solution, Pie achieves magnitudes lower latency and 9.4X higher throughput.

Frequently asked questions about CPU IP cores

What is High performance Linux-capable processor?

High performance Linux-capable processor is a CPU IP core from Sifive, Inc. listed on Semi IP Hub.

How should engineers evaluate this CPU?

Engineers should review the overview, key features, supported foundries and nodes, maturity, deliverables, and provider information before shortlisting this CPU IP.

Can this semiconductor IP be compared with similar products?

Yes. Buyers can compare this product with similar semiconductor IP cores or IP families based on category, provider, process options, and structured technical specifications.

×
Semiconductor IP