Vendor: Sifive, Inc. Category: CPU

Highly efficient out-of-order RISC-V vector application processor series

The SiFive Performance™ P400-Series application processors are SiFive’s first efficiency-focused Out-of-Order processors.

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RISC-V View all specifications

Overview

The SiFive Performance™ P400-Series application processors are SiFive’s first efficiency-focused Out-of-Order processors. The P400-series is derived from the successful and mature P500-Series, with considerable finely-tuned optimizations for best-in-class performance efficiency and compute density.

The P470 vector application processor, with a 128-bit RISC-V Vector ALU, is capable of 2x the single thread performance of an Arm Cortex-A55, achieving >8 SpecINT2k6/GHz, still within similar area and power budgets, representing a significant upgrade to legacy efficiency class cores currently available.

For applications that don't require vector compute, or for more area-constrained markets, the P450 offers similar performance levels in a smaller area footprint.

Key features

  • Full support for the RVA22 RISC-V profile specification for enabling 64-bit apps processors running feature rich OS stacks such as Linux, Wear OS, and Android.
  • Best-in-class RISC-V performance efficiency
    • Coherent multi-core, multi-cluster processor configuration, up to 16 cores
    • Performance >8 SpecINT2k6/GHz, twice the single thread performance of the Arm® Cortex-A55® (P470 Processor)
    • 1x 128-bit RISC-V Vector ALU, compliant the ratified RISC-V Vector specification as well as the (P470 Processor)
    • RISC-V Vector Cryptography extension (P470 Processor)
  • P400-Series Architectural Features
    • 64-bit RISC-V core with extensive virtual memory support
    • Three issue, out-of-order pipeline tuned for scalable, highly efficient performance
    • Private L2 Caches and Streaming Prefetcher for improved memory performance
    • SECDED ECC with Error Reporting
  • Enabling next generation Wearable and Consumer applications
    • Advanced interrupt controller with support for MSI style interrupts and virtualization
    • System Level Virtualization IP
    • Cache stashing to L3 for tightly coupled accelerators

Specifications

Identity

Part Number
Performance P400
Vendor
Sifive, Inc.
Type
Silicon IP

Compute

CPU Architecture
RISC-V

Files

Product Sheet Download

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

Provider

Sifive, Inc.
HQ: USA
Contact Sifive, Inc.

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Frequently asked questions about CPU IP cores

What is Highly efficient out-of-order RISC-V vector application processor series?

Highly efficient out-of-order RISC-V vector application processor series is a CPU IP core from Sifive, Inc. listed on Semi IP Hub.

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

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