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SiFive Performance
P400-Series

P450/470: Efficiency-Focused OoO Processors

The SiFive Performance™ P450/470-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 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.

SiFive Performance
P400-Series 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
  • 3 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

p470 peak single-thread performance

Download Performance P400 Series
Product Briefs

Learn more about SiFive Performance P400 Series benefits! Download our detailed product briefs today or contact our sales team with any questions.

SiFive Performance Family

P600 Series
Performance
  • High performance cores for general purpose applications
  • 4-wide out-of-order core
  • Scalable to up to 16 cores
  • RVA22 with 2x128-bit Vectors/vector crypto
P800 Series
Performance
  • Highest single threaded performance cores
  • 6-wide, out-of-order core
  • Scalable to 256 cores
  • RVA23 with 2x128 bit vectors
  • CHI bridge
  • RAS Functionality

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Core IP Families

Automotive
SiFive Automotive™ solutions provide a range of high-end application and real-time processors, delivering industry-leading performance, minimal area, and low power consumption. ISO 21434, ISO26262 ASIL B, ASIL D and split-lock certifications.
Essential
The SiFive Essential™ family offers a wide range of silicon-proven, pre-defined embedded CPU cores or lets you use SiFive Core Designer to build a custom processor configuration tailored to your specific market and needs.
Intelligence
Intelligence embraces a software-first approach to processor design, addressing the future needs of deploying ML and AI at the edge. It provides high-performance, scalable vector and matrix compute capabilities, adaptable to evolving workloads.