SiPearl, a company based in Maisons-Laffitte specializing in the design of high-performance, low-power processors for supercomputing and artificial intelligence, is finalizing its €130 million Series A. This closing includes an additional third tranche of €32M provided by the EIC Fund (European Innovation Council), the French State via French Tech Souveraineté (France 2030 plan), and Cathay Venture, a Taiwanese fund making its first investment in France. The deal illustrates the trajectory of a key player in Europe's semiconductor sovereignty strategy, with the global supercomputing market estimated at $50 billion in 2025, according to figures reported by Les Echos.
Anatomy of the third tranche: €32M to move into production
Structuring a Series A in tranches is rare in venture capital, but it is consistent with a deep tech industrial project with clear technical milestones. The third tranche of €32M is provided by:
- The EIC Fund (European Innovation Council), a European instrument that takes equity stakes to complement Horizon Europe grants;
- The French State via French Tech Souveraineté, a scheme led by the Secrétariat Général pour l'Investissement as part of France 2030;
- Cathay Venture, a Taiwanese private equity firm making its first investment in France.
For an HPC semiconductor project, this conditional tranche funds the industrial phases: tape-out, foundry qualification, first samples, and system qualification. SiPearl designs its Rhea1 processor on Arm IP blocks (Neoverse) and has it manufactured by TSMC, as documented by Maddyness in its coverage of the technical roadmap.
Cathay Venture: a signal for the Asian ecosystem
Cathay Venture coming on board is a strong signal. The Taiwanese private equity firm holds unique expertise across the semiconductor value chain, and its decision to invest in France for the first time reflects recognition of the quality of the French ecosystem. It also opens up potential commercial ties with the Asian industrial ecosystem.
The SiPearl project: a building block of European sovereignty
SiPearl was founded in January 2020 on the initiative of the European Processor Initiative (EPI) consortium, a project funded by the European Union as part of its drive to rebuild a sovereign HPC processor industry. The company designs Rhea1, a processor based on Arm Neoverse architecture built to power European exascale supercomputers, including the future Jules Verne supercomputer hosted in France.
Several technical characteristics set this approach apart:
- Arm Neoverse V1 architecture with SVE vector extensions for sustained performance;
- HBM (High Bandwidth Memory) to reduce the memory bottleneck of HPC and AI workloads;
- Power profile optimized to lower the total cost of ownership (TCO) of computing centers;
- Arm software compatibility, making it easier to port existing scientific codes.
EuroHPC and European public procurement
The reference customer is the EuroHPC Joint Undertaking, which finances and deploys European supercomputers (LUMI in Finland, Leonardo in Italy, MareNostrum 5 in Spain). The exascale roadmap includes the deployment of Jupiter in Germany and Jules Verne in France, the latter set to integrate Rhea1. According to an analysis by Bpifrance, total European investment in exascale infrastructure exceeds €8 billion over the 2021-2027 period.
A team of 200 experts across three countries
SiPearl has built a technical team of 200 employees based in France, Spain and Italy - a footprint consistent with its EPI partners. The company has also developed sovereign infrastructure, with data centers and design environments spread across Europe, to limit its reliance on US EDA tools while remaining interoperable with the global ecosystem.
The capital challenge for deep tech semiconductors
Developing an HPC processor involves long R&D cycles (5 to 7 years between design and first series production) and heavy investment (a tape-out on an advanced process costs tens of millions). This capital intensity explains why traditional venture capital invests little in this segment, and why public and strategic vehicles play a structural role. This is precisely the purpose of French Tech Souveraineté and the EIC fund. As FrenchWeb points out, several European initiatives - the Chips Act, IPCEI Microélectronique - are converging to relocate part of the value chain to the continent.
SiPearl vs Nvidia, Intel, AMD: a differentiated positioning
In the HPC market, SiPearl does not seek to compete head-on with the hyperscalers on raw performance. Its positioning rests on three differentiators:
- Sovereignty: having a European player capable of equipping sensitive infrastructure;
- Energy profile: an increasingly valued argument as HPC data centers cross new power consumption thresholds;
- Optimization for scientific codes: the European HPC community runs highly specific codes (climate, nuclear simulation, materials science).
For teams deploying AI in HPC environments, the arrival of Rhea1 will open up sovereign European test benches for training and running inference on GPU-alternative architectures.
Industrial risk and timeline
The main operational risk remains that of any deep tech semiconductor project: hitting tape-out deadlines, achieving acceptable yields at TSMC, and delivering a product aligned with the EuroHPC program roadmap. Any 6 to 12 month delay can push back the commercialization of European supercomputers and defer revenue. The tranche-based structure of the raise is precisely designed to stagger commitments according to the technical milestones reached.
Implications for the French tech ecosystem
SiPearl is today one of the most strategic assets of industrial French Tech. Its success partly determines the credibility of France's technology sovereignty strategy. The deal also reinforces the position of Maisons-Laffitte and the Paris region as a semiconductor hub, alongside Crolles (STMicroelectronics), Grenoble (CEA-Leti) and Toulouse (Continental, NXP). For the growth teams of B2B deep tech startups, this type of deal is a reminder that valuing scientific assets requires long cycles and close alignment with public procurement policies.
FAQ
How much has SiPearl raised in its Series A?
SiPearl is finalizing its Series A at €130 million, including an additional third tranche of €32 million from the EIC fund, French Tech Souveraineté (French State) and Cathay Venture.
What does SiPearl design?
SiPearl designs Rhea1, a high-performance, low-power processor based on the Arm Neoverse architecture, built to power European supercomputers, including the future Jules Verne hosted in France.
Who are the investors in this tranche?
Three investors are involved in the third tranche: the EIC Fund (European Innovation Council), the French state via French Tech Souveraineté (France 2030 plan), and Cathay Venture, a Taiwanese fund making its first investment in France.
Who is SiPearl's main customer?
The reference customer is the EuroHPC Joint Undertaking, which finances and deploys European supercomputers. The roadmap includes the Jules Verne supercomputer in France, which is set to integrate Rhea1.
Why is this deal strategic for Europe?
It funds the industrialization of a sovereign European HPC processor, the cornerstone of Europe's semiconductor sovereignty strategy. It forms part of a total investment of more than €8 billion in European exascale infrastructure over 2021-2027.