SiFive

Overview

SiFive is an American fabless semiconductor intellectual property (IP) company that specializes in providing commercial RISC-V processors and silicon chips based on the open-standard RISC-V instruction set architecture (ISA). Founded in 2015 by Krste Asanović, Yunsup Lee, and Andrew Waterman, who were also the inventors of RISC-V, SiFive has positioned itself as a leader in the nascent but rapidly growing RISC-V ecosystem. The company licenses its core designs to various semiconductor manufacturers, enabling them to develop customized chips for a wide range of applications, including AI, automotive, edge computing, IoT, and data centers. Headquartered in Santa Clara, California, SiFive has garnered significant investment, raising a total of approximately $970 million to date, with its most recent Series G funding round in April 2026 valuing the company at $3.65 billion.

Recent Developments

SiFive has experienced significant growth and strategic shifts in recent years, particularly in its focus on high-performance computing markets.

April 9, 2026: SiFive announced it raised $400 million in an oversubscribed Series G funding round. This round, led by Atreides Management and including investments from Nvidia, Apollo, D1 Capital Partners, Point72, and T. Rowe Price Investment Management, brought SiFive's total funding to approximately $970 million and increased its post-money valuation to $3.65 billion. The company intends to use this capital to accelerate its roadmap for high-performance data center solutions, particularly focusing on agentic AI workloads. CEO Patrick Little indicated that this could be the final funding round before a potential public offering.
September 8, 2025: The company unveiled four new central processing unit (CPU) cores, including the X160, X180, X280, and X390, specifically optimized for artificial intelligence models. These new designs feature enhanced vector processing capabilities and a new co-processor interface, facilitating easier integration into System-on-Chips (SoCs) that incorporate AI accelerators. SiFive anticipates that chips based on these designs will begin production by the second quarter of 2026.
2025 Milestones: SiFive achieved record growth throughout 2025, reporting that its IP is now featured in over 500 designs, with more than 10 billion cores shipped to date.
March 2022: SiFive successfully closed a Series F funding round, securing $175 million. This investment boosted the company's valuation to $2.5 billion.
March 2022: Alphawave IP Group plc acquired SiFive's OpenFive business unit for $210 million. As part of this transaction, Alphawave also secured a license for RISC-V processor intellectual property from SiFive.

SiFive

Overview

Recent Developments

Company Information

References