SiFive Secures $400 Million to Fuel RISC-V Expansion in Agentic AI Data Centers

SiFive, the primary architect of the RISC-V standard, has secured $400 million in an oversubscribed Series G funding round to accelerate its high-performance data center roadmap. This major capital injection brings the company valuation to $3.65 billion as it focuses on the burgeoning requirements of agentic AI workloads. Led by Atreides Management, the investor syndicate includes heavyweights like NVIDIA, Apollo Global Management, and T. Rowe Price.

The fresh funding will be used to develop next-generation CPUs that excel at orchestrating complex system-level tasks that standard GPUs are not designed to handle. SiFive plans to expand its global engineering teams and advance its roadmap for scalar, vector, and matrix processor IP. This expansion aims to provide hyperscale customers with customizable alternatives to proprietary legacy architectures that currently dominate the server market.

A significant part of the company strategy involves its native adoption of NVIDIA NVLink Fusion. This partnership enables SiFive’s RISC-V CPUs to maintain high-bandwidth connectivity with NVIDIA AI hardware, bypassing traditional performance bottlenecks found in legacy systems. Such integration allows developers to utilize modern scale-up technologies while maintaining the flexibility of an open-standard architecture.

Industry analysts believe this move addresses a critical need for energy-efficient compute capacity within existing data center power envelopes. By replacing power-hungry legacy designs with modern RISC-V cores, SiFive helps customers scale their hardware at the speed of AI innovation. The company currently counts over 500 design wins and has shipped more than 10 billion cores across its history.

This Series G round is expected to be SiFive’s final private financing prior to a potential Initial Public Offering. CEO Patrick Little emphasized that hyperscalers are urgently seeking open-standard alternatives to differentiate their data center compute solutions. With the support of top-tier institutional investors, the company is positioned to capture a large share of the estimated $100 billion AI infrastructure market.