NVIDIA’s investment in SiFive underscores growing momentum behind RISC-V as an open alternative for next-generation AI and data center chips.
SiFive, the company founded by the UC Berkeley engineers who created the RISC-V open-source chip architecture, closed a $400 million oversubscribed Series G on April 9, valuing the firm at $3.65 billion – up from $2.5 billion at its 2022 Series F. CEO Patrick Little confirmed the round is the company’s final private financing before an IPO, though no exchange or timeline has been disclosed.
NVIDIA led the strategic investor list alongside Atreides Management, Apollo Global Management, D1 Capital Partners, Point72 Turion, T. Rowe Price, Capital Group, Prosperity7 Ventures, and Sutter Hill Ventures. Proceeds will fund development of RISC-V CPU and AI accelerator IP for data centers, global engineering expansion, and deeper integration with NVIDIA’s NVLink Fusion interconnect. SiFive’s IP is already embedded in more than 500 semiconductor designs, with over 10 billion RISC-V cores shipped to date.
Why It Matters
The round signals that the x86/ARM duopoly in AI Business infrastructure is under serious competitive pressure for the first time in decades. Hyperscalers have made clear they want open-standard CPU alternatives: RISC-V is royalty-free, customizable, and increasingly software-ready, with existing ports to CUDA, Red Hat, and Ubuntu. Analysts peg the addressable market for next-generation AI data center CPU IP at over $100 billion. For context, Intel had offered SiFive more than $2 billion in a 2021 acquisition attempt that ultimately collapsed – the company is now worth $3.65 billion on its own terms.
NVIDIA’s position is strategically layered. By investing in an open CPU architecture, it hedges against proprietary CPU vendors – Intel and AMD – while simultaneously positioning NVLink Fusion as the connective tissue between its GPUs and any future RISC-V data center processors. ARM’s recent move to ship its own in-house silicon, with Meta and OpenAI as customers, further accelerated the push toward open alternatives by signalling that ARM is transitioning from neutral IP licensor to hardware competitor.
What’s Next
SiFive’s IPO will be one of the most closely watched semiconductor listings since Arm’s 2023 Nasdaq debut. The company has not named an exchange or underwriter, but the oversubscribed nature of the Series G and the high-profile investor roster suggest a 2026 filing is realistic. The key risk is execution: competing against established CPU vendors in the data center requires not just IP but a mature software stack, and RISC-V’s toolchain ecosystem remains thinner than x86 or ARM in enterprise environments. SiFive’s ability to close that gap – with NVIDIA’s resources and Cloudflare, AWS, and Google as prospective customers – will determine whether RISC-V becomes a third major CPU architecture or remains a compelling niche.
For the broader AI chip supply chain, the round confirms that compute diversification is now a strategic priority, not a theoretical goal. The semiconductor funding cycle has shifted: money is moving from pure GPU plays toward the full compute stack, and open architectures are at the centre of that shift.
Sources: SiFive Press Release · TechCrunch · Business Wire · The Next Web
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