RISC-V Faces Reality Check in Qualcomm vs Arm Court Battle as Judge Questions Its Near-Term Viability
RISC-V has long been described as one of the most promising alternatives in the processor industry. As a free and open-source instruction set architecture built around Reduced Instruction Set Computing principles, it has attracted attention from chip designers, cloud companies, AI developers, and governments looking for more control over their silicon roadmaps.
But despite years of excitement, RISC-V still appears to be far from replacing the dominant CPU architectures used in mainstream computing. That point came into sharp focus during the ongoing legal fight between Qualcomm and Arm, where a Delaware federal judge questioned whether RISC-V is a practical alternative today.
The dispute traces back to Qualcomm’s 2021 acquisition of Nuvia, a chip startup focused on high-performance Arm-based CPU cores. Qualcomm paid around $1.4 billion for Nuvia, and the deal became central to its custom Oryon CPU strategy, which now plays a major role in Qualcomm’s ambitions across PCs, mobile devices, and data center-class computing.
Arm objected to the acquisition’s licensing implications. The company argued that Nuvia’s Architecture License Agreement could not simply transfer to Qualcomm without Arm’s approval or a new agreement. Qualcomm, meanwhile, maintained that its own licensing arrangement with Arm remained valid and allowed it to continue development.
In the earlier phase of the dispute, Judge Maryellen Noreika largely supported Qualcomm’s position, particularly because Qualcomm’s own Architecture License Agreement with Arm remains in place until 2033.
However, the legal battle did not end there. Qualcomm later filed a separate case against Arm, accusing the company of failing to meet obligations under its Architecture License Agreement and Technology License Agreement. Qualcomm claims Arm withheld key architectural verification tools, software updates, chip-testing support, and other technology it says should have been provided under contract.
Qualcomm also alleges that Arm violated most-favored-nation pricing terms, which Qualcomm argues should prevent it from paying significantly higher rates than comparable customers. In addition, Qualcomm claims Arm interfered with a potential chip deal involving Meta Platforms after a letter threatening to terminate Qualcomm’s Arm license became known during negotiations. Qualcomm says that development harmed its business prospects, with damages potentially reaching into the hundreds of millions of dollars.
Another major point of contention is Arm’s royalty demands for its next-generation Arm v10 architecture, which Qualcomm has characterized as excessive.
During the current proceedings, Arm called economist Timothy Simcoe as a rebuttal witness. Simcoe argued that Arm faces competitive pressure from both Intel’s x86 architecture and RISC-V, and that these alternatives help keep Arm’s licensing behavior in check over the long term.
That argument drew direct scrutiny from Judge Noreika. She questioned whether RISC-V is truly a usable competitor in today’s CPU market. When Qualcomm’s investment in RISC-V-related company Ventana was raised as evidence of future competition, the judge pushed back on the idea that RISC-V currently represents a meaningful option for major customers.
Her point was straightforward: in practical terms, the CPU architecture market today is still dominated by Arm and Intel’s x86. While RISC-V may have long-term potential, it has not yet reached the level of maturity, software support, and ecosystem depth needed to compete broadly in enterprise data centers or mainstream high-performance computing.
Simcoe acknowledged that RISC-V remains early in its enterprise journey, with only limited examples of serious deployment, including emerging designs from companies such as Alibaba. The judge also asked whether Arm’s argument was essentially that if Arm becomes too difficult or expensive to work with, customers will be encouraged to invest in alternatives such as RISC-V over time. Simcoe accepted that this was part of the competitive theory.
That exchange highlights a key issue facing the chip industry. RISC-V is real, but its role in the broader CPU market remains limited. It is already used in embedded systems, microcontrollers, specialized processors, and some AI-focused designs. However, being useful in targeted applications is very different from becoming a drop-in alternative to Arm or x86 in laptops, smartphones, servers, and enterprise infrastructure.
Alibaba’s XuanTie C950 is one example of how RISC-V is advancing. The chip has been presented as a 64-bit server-grade RISC-V processor aimed at edge AI workloads. It reportedly features 64 compute cores on a single piece of silicon, clock speeds scaling up to 3.20GHz, and an architecture organized into clusters of eight cores connected through high-speed AMBA CHI fabrics.
The XuanTie C950 is also designed to handle AI workloads without depending on a traditional GPU. Instead, it integrates matrix and vector acceleration engines directly into the processor, allowing it to target demanding artificial intelligence tasks with a CPU-centric approach.
That kind of development shows why RISC-V continues to attract industry interest. Its open architecture gives companies more flexibility, reduces dependence on proprietary ecosystems, and allows custom chipmakers to tailor processors for specific workloads. In an era defined by AI acceleration, edge computing, and custom silicon, those advantages are significant.
Still, the biggest challenge for RISC-V is not simply designing impressive chips. The real obstacle is the ecosystem.
Arm and x86 have decades of software support, developer tools, operating system optimization, compilers, firmware compatibility, and commercial trust behind them. Enterprise customers do not choose CPU architectures based only on technical specifications. They also need reliability, long-term support, proven performance, security updates, cloud compatibility, and a large base of developers who can build and maintain software for the platform.
That is where RISC-V still lags. Even if hardware progress accelerates, widespread adoption in enterprise data centers will take time. Large customers are cautious, especially when infrastructure decisions involve mission-critical workloads. For now, Arm and Intel remain the practical choices for most serious CPU deployments.
The courtroom discussion underscores a broader truth about the semiconductor industry: potential is not the same as market power. RISC-V may become a major force in the future, especially as companies seek more control over processor design and licensing costs. But today, its presence in the highest-value parts of the CPU market remains limited.
For Qualcomm, the case is about protecting its ability to develop custom Arm-based processors under existing agreements. For Arm, it is about defending its licensing model at a time when its technology is increasingly central to smartphones, PCs, AI devices, and server strategies. For the rest of the chip industry, the dispute offers a rare look at how much leverage Arm still holds, despite growing interest in open alternatives.
RISC-V is not going away. Its momentum in embedded computing, AI accelerators, and experimental server designs is real. But the Delaware court exchange made one thing clear: when it comes to practical CPU architecture choices available at scale right now, the market still revolves around Arm and x86.
That could change in the years ahead, but the shift will require more than hype. RISC-V needs stronger software support, broader commercial adoption, proven enterprise deployments, and a mature ecosystem capable of convincing major customers that it is ready for mainstream workloads.
Until then, RISC-V remains one of the most closely watched technologies in the semiconductor world: full of promise, strategically important, and still fighting to prove it can move from future alternative to present-day competitor.
