SiFive raises $400M from Nvidia to challenge Arm in booming data center chip market

Silicon Valley has a new contender in one of the most lucrative battles in tech. SiFive has raised $400 million from a heavyweight group of investors led by Atreides Management and backed by Nvidia, setting the stage for a direct challenge to Arm Holdings in the race to power the next generation of data centers.

The new round values SiFive at $3.65 billion, a sharp signal that investors see real momentum behind its push into central processor design for large-scale computing. CEO Patrick said the company expects this to be its final private raise before heading toward a public offering, though no timeline has been locked in.

“Hyperscale customers have made it very clear that it is time to accelerate the availability of open standard alternatives for the data center. Their consistent ask is for customizable CPU solutions in IP form, that will enable them to meaningfully differentiate their data center compute solutions,” said SiFive Chairman and CEO Patrick Little.

He added, “RISC-V is the only architecture that truly delivers on these requirements. As the industry urgently evolves toward agentic AI, SiFive is doubling down on the data center. By collaborating with our data center customers, we are uniquely positioned to capture a substantial portion of the tremendous agentic AI opportunity.”

SiFive’s business model stands apart from traditional chipmakers. The company does not manufacture processors. It sells the underlying designs that customers can customize for their own silicon. That approach has long been dominated by Arm, whose architecture is used in chips from companies across the industry, including Apple Inc. and Samsung Electronics.

That balance has started to shift. Arm recently moved beyond licensing and began developing its own chips, placing it in direct competition with some of the same companies it once served. That change has opened the door for alternatives.

With $400M from Nvidia, SiFive pushes deeper into data center CPUs and Arm’s territory

SiFive is betting on one of those alternatives: RISC-V, an open standard that is not controlled by any single company. The architecture has gained traction over the past decade as developers and hardware teams seek greater flexibility and fewer licensing constraints.

“There’s uncertainty about where their tried-and-true suppliers ‌are ⁠going to be able to take them over the coming years,” Little said of SiFive’s customers, according to a Reuters report. “And so all of them have become comfortable, because we’ve worked with them for a decade, that RISC-V has now matured to the point where it can be that option for them.”

That confidence did not emerge overnight. SiFive traces its roots back to 2015, when Andrew Waterman, Krste Asanović, and Yunsup Lee launched the company after helping create the RISC-V architecture. Their goal was simple: reduce the cost and time required to design chips at a moment when traditional scaling was slowing, and development costs were rising.

The company has steadily built credibility since then. TechStartups covered SiFive in 2020 after it raised $61 million in a Series E round backed by Saudi Aramco and others. Later funding brought in names like SK hynix and Prosperity7 Ventures, along with continued support from firms tied to major chipmakers.

Now the stakes are much higher. SiFive plans to use the new capital to develop CPU designs aimed at data centers, a segment seeing surging demand as AI workloads push infrastructure to its limits. Arm has already entered this space with its own offerings. Nvidia is making moves there as well. Intel continues to face pressure as demand outpaces supply.

“We’ve decided that we’re going after the highest brass ring in the data center,” Little said.

The investor list behind this round reflects that ambition. Alongside Atreides and Nvidia, participants include Apollo Global Management, D1 Capital Partners, Point72, and funds advised by T. Rowe Price, as well as existing backers such as Capital Group and Sutter Hill Ventures.

At the center of it all is a shift in how chips are designed and who controls their underlying architecture. RISC-V offers a path that breaks from the traditional licensing model, and SiFive is positioning itself as the company that can turn that openness into a commercial force.

The next phase will test whether that vision can translate into real market share in data centers, where performance, efficiency, and reliability carry enormous weight. For now, the backing from some of the most influential names in tech and finance suggests SiFive has earned a serious look as the competition intensifies.

SiFive