SiFive is a fabless semiconductor company that produces computer chips based on the RISC-V instruction set architecture.

SiFive is the first fabless semiconductor company to build customized silicon based on the free and open RISC-V instruction set architecture.

SiFive was founded in 2015 by Yunsup Lee, Krste Asanović, & Andrew Waterman. The company has its headquartered based in San Mateo, California with 14 additional offices worldwide.


SiFive develops a range of processor cores, accelerators, and SoC IP to create domain-specific architecture that will enable efficient, high-performance computing solutions. It innovates by developing processor microarchitecture, SoC IP, and accelerator IP for use in workload-specific silicon.


SiFive’s product portfolio of RISC-V-based microarchitectures are the perfect choice to replace and augment legacy, general-purpose proprietary architectures in workload-focused designs.


SiFive also launched the SiFive 20G1 update for SiFive Core IP, enabling significant enhancements for performance, power, area, and features, with pre-integrated SiFive Shield, for whole SoC security, and SiFive Insight advanced trace and debug capabilities.


SiFive is backed by Intel Capital, Coatue Management, Qualcomm Ventures, Sutter Hill Ventures, SK hynix, Prosperity7 Ventures, Chengwei Capital, Spark Capital, Osage University Partners, Huami, and others. The company raised $175M in Series F round on Mar 16, 2022. This brings SiFive's total funding to $365.5M to date. The latest round mints SiFive a unicorn with a valuation of over $2.5B post-money.



  • Year founded: 2015
  • Funding Info: $190.5M over 5 Rounds of Funding (Last Funding Type: Series E)
  • Yearly Revenue: NA
  • Employee Size: 501-1,000
  • Business Valuation: Valued at over $2.5B as of Mar 16, 2022
  • City/Town: San Mateo
  • State: California
  • Country: United States
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