S7 Series


The SiFive S76-MC Standard Core is a high-performance 64-bit quad-core embedded processor which is fully-compliant with the RISC-V ISA.

The S76-MC is ideal for latency-sensitive applications in domains such as storage and networking that require high-throughput, 64-bit memory addressability, and have real-time constraints (e.g. Enterprise Storage, In-storage Compute, 5G Base Stations, SLAM processing, etc.)


  • Fully compliant with the RISC-V ISA specification
  • RV64GC S76 Core (4x)
  • Machine and User Mode Support
  • In-order, 8-stage pipeline
  • Advanced Memory Subsystem
    • 32KB Instruction Cache
    • 32KB Instruction Tightly Integrated Memory (ITIM)
    • 32KB Data Cache
    • 32KB Data Local Store (DLS)
  • Efficient and flexible interrupts
  • Physical Memory Protection (PMP)
  • High-performance TileLink Interface
  • Benchmark Scores
    • 4.27/2.5 DMIPS/MHz (Best Effort/Legal)
    • 5.1 CoreMarks/MHz


Series Overview


The S7 Series offers a 64-bit embedded processor targeting high-performance, real-time applications that require 64-bit memory addressability. The S7 core has a superscalar 8-stage in-order pipeline.



  • Up to 8 coherent high-performance RISC-V real-time processors
  • Supports an in-cluster coherent combination of application processors with real-time processors (S7 and U7)
  • L2 cache available for high-performance applications (optional)
  • New microarchitecture features for enhanced security and real-time determinism
  • 64-bit addressability for embedded applications


  • Enterprise Storage, Object Storage
  • In-storage Compute, Edge Devices
  • FAST data analytics, Line-rate network processing
  • Baseband Processing, 5G Modems
  • Telematics Units


CoresAreaStandard CoresARM Comparison
E2 系列 E20 ,E21 ,E24

M0, M0+, M3, M4, M23, M33

E3 系列 E31 ,E31

R4, R5

E7 系列 E76 ,E76-MC

M7, R7, R8

S2 系列 S21


S5 系列 S51 ,S54

R4, R5

S7 系列 S76 ,S76-MC

M7, R7, R8

U5 系列 U54 ,U54-MC

A5, A7, A35, A53

U7 系列 U74 ,U74-MC