SiPearl
- Company typePrivate
- Founded2019
- HeadquartersMaisons-laffitte, France
- Headcount101–250
- GTM typeB2B
- OfferingHardware or Manufacturing
SiPearl firmographics
Firmographics- Name
- SiPearl
- Legal name
- SiPearl
- Website
- https://sipearl.com
- Company type
- Private
- Founded year
- 2019
- Operating status
- Operating
- Headcount range
- 101–250 employees
- Ownership category
- akta.pro rank
SiPearl industry classification
Industry- Product category
- High-Performance Server Processors
- NAICS
- Computer Systems Design Services (541512)
- SIC
- Electronic Computers (3571)
- akta.pro primary industry
- Compute & Acceleration ICs (CPU/GPU/AI/FPGA/ASIC) (HDAHABAC)
- akta.pro secondary industries
- Application Processors & Microprocessors (MPUs/CPUs) (HDAHAJAB), Hyperscale/OEM & Open Compute (OCP) Server Platforms (HDACABAI)
Keywords
Where SiPearl is headquartered
LocationHeadquarters
- HQ city
- Maisons-laffitte
- HQ country
- France
- HQ region
- Europe
Offices6 records
Markets served
SiPearl business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Technology or R&D, Personnel, Supply Chain, Operations, Infrastructure, Marketing or Sales
Revenue model
- CPU Hardware Sales: SiPearl generates revenue through the sale of its proprietary high-performance CPUs (Rhea1, Athena1, and subsequent generations) to supercomputing and data center operators. The company is fabless, with manufacturing handled by TSMC.
- Series A Funding: Completed €130 million Series A funding in July 2025 with participation from Cathay Venture (Taiwan), EIC Fund, and France 2030. Company has launched Series B round.
Go-to-market motion2 records
Distribution channels3 records
Marketing channels4 records
SiPearl product offering
Product offeringCore offering
SiPearl designs and sells European-designed, high-performance, energy-efficient server CPUs based on the Arm Neoverse V1 architecture for HPC, AI, and data center workloads. Its lead product, Rhea1, is a 61-billion-transistor 80-core CPU with HBM, DDR5, and PCIe Gen5 manufactured on TSMC's 6nm process, and will equip JUPITER, Europe's first exascale supercomputer. The next-generation Athena1 extends the portfolio to sovereign, security-focused government, defense, and aerospace applications.
Product overview
SiPearl is a European fabless semiconductor company designing sovereign, secure, high-performance, energy-efficient CPUs for HPC, AI, and data centers. The company offers two main processor products: Rhea1 (first-generation HPC/AI processor with 80 Arm Neoverse V1 cores, 6nm TSMC process, targeting Europe's first exascale supercomputer JUPITER) and Athena1 (second-generation security-focused processor for government, defense, and aerospace markets, scheduled for H2 2027 release). Both products are designed to strengthen Europe's technological sovereignty for strategic applications in security, defense, medical research, energy, climate, and engineering.
Differentiator
Problem solved
Functional benefit
Brands
- Rhea1: First-generation high-performance energy-efficient European server CPU with 80 Arm Neoverse V1 cores, 61 billion transistors, built on TSMC 6nm process. Designed for HPC and AI workloads, targeting Europe's first exascale supercomputer JUPITER.
- Athena1
Products and services
- Rhea1 High-performance, energy-efficient European server CPU integrating 80 Arm Neoverse V1 cores with 2x 256-bit SVE units per core, 4 stacks of HBM, 4 DDR5 interfaces supporting 2DPC, and 104 lanes of PCIe Gen5, manufactured on TSMC's 6nm process. Designed for HPC and AI workloads at Europe's exascale supercomputers and sovereign cloud and AI infrastructure.
- Athena1 Security-focused European server processor featuring configurable Arm Neoverse V1 cores, designed for government, defense, and aerospace applications and dual-use civil and defense workloads. Architected to be backdoor-free and kill switch-free, and planned to be manufactured in Europe to bolster local supply chains.
Quantifiable outcome
- Rhea1 will deliver exascale performance (1 billion billion calculations per second) to power JUPITER supercomputer
- +2 more outcomes
Companies that use SiPearl
Customer profileNamed customers3 records
Segments5 records
Ideal customer profiles3 records
SiPearl technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature5 records
SiPearl partnerships and signals
Strategic signalPartnerships
Five partnerships are on record, tiered core.
- T-Global TechnologycoreTwo-year joint R&D project to develop advanced thermal management solutions including high thermal conductivity materials and two-phase liquid cooling modules for next-generation HPC microprocessors. Funded by Taiwan's Ministry of Economic Affairs 'A+ Driving Industrial Innovation with AI' Program. Collaboration addresses escalating chip heat density driven by AI, cloud, and HPC workloads while positioning both companies for future computing platforms.
- SemidynamicscoreStrategic partnership to develop European rack-scale AI compute platform combining SiPearl's Arm-based CPU with Semidynamics' RISC-V-based GPU/AI inference ASIC. Platform targets sovereign cloud-based inference workloads across Europe using Open Compute Project standards. Phase two involves chiplet-level integrations with joint reference architecture and coordinated tender responses for European AI Factory and Giga Factory programs.
- European Processor Initiative (EPI) ConsortiumcoreSiPearl was incubated within the European Processor Initiative consortium and works closely with 30 partners including major scientific institutions, HPC centers, and industry stakeholders. EPI partners include CERN, SKAO, CNRS, SURF, EPFL, ETH Zurich, and Energy Aware Solutions. These partners serve as stakeholders, future clients, and end users of SiPearl processors.
- TSMCcoreTSMC manufactures SiPearl's Rhea1 processor using its 6nm process node. TSMC is the world's leading advanced semiconductor factory, accounting for over 60% of global foundry revenue and 90%+ of leading-edge chip production.
- ArmcoreArm licenses the Neoverse V1 core architecture used in SiPearl's processors. Arm's mature software ecosystem provides compilers, libraries, and tools supporting SiPearl's HPC and AI workloads.
Scale indicators8 records
Recent moves6 records
Expansion highlights6 records
SiPearl competitors and assessment
Company assessmentBroad incumbents
- Intel: Dominant incumbent in server CPUs (Xeon) and HPC, with broad portfolio spanning client, server, and emerging Arm-based offerings. Competes head-on with SiPearl in EuroHPC procurement and commercial data center sales.
- AMD: EPYC server CPUs are the principal x86 alternative in HPC and data center. Powers multiple exascale systems (Frontier, El Capitan) and competes directly for the same EuroHPC and commercial workloads SiPearl targets.
- NVIDIA: NVIDIA Grace CPU and Grace Hopper superchips target the same AI/HPC data center buyer. While GPU-first, NVIDIA's full-stack AI compute platform is a key competitive alternative for sovereign AI Factory procurements.
Emerging players
- Graphcore: UK-headquartered AI accelerator (IPU) company targeting HPC and AI training/inference. Comparable European deeptech peer addressing similar sovereign AI compute buyer base with an alternative architecture.
- Tenstorrent: AI compute company building RISC-V-based CPUs and AI accelerators led by Jim Keller. Targets similar HPC/AI workloads with an open-architecture approach; potential alternative for sovereign AI Factory tenders.
- Kalray: French fabless semiconductor company designing MPPA (Massively Parallel Processor Array) processors for AI, data center, and edge workloads. Comparable European fabless peer with overlapping sovereign compute narrative.
- Esperanto Technologies: Develops RISC-V-based AI accelerators and energy-efficient compute for HPC and AI inference. Comparable in targeting energy-efficient AI compute, though smaller scale and earlier stage than SiPearl.
Direct peers
- Ampere Computing: Fabless Arm-based server CPU company targeting hyperscale and cloud data centers. Closest direct peer to SiPearl: both license Arm Neoverse, focus on energy-efficient server CPUs, and sell into HPC/cloud workloads with similar go-to-market.
- Fujitsu: Designed the A64FX Arm-based processor powering the Fugaku supercomputer (formerly the world's fastest). Closest analogue to SiPearl's Rhea1 role in JUPITER, with deep HPC and national supercomputing customer relationships.
- Marvell Technology: Designs custom Arm-based server silicon (including Microsoft's Cobalt) and data center infrastructure chips. Comparable fabless business model targeting the same HPC/cloud CPU buyer base as SiPearl.
Market position
Strengths4 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
SiPearl social profiles
Digital presenceSiPearl financial estimates
Financial estimateRevenue estimate
Valuation estimate
SiPearl leadership team
Management profileNumber of profiles
Profiles1 record
SiPearl funding detail
Funding detailFunding overview
Funding rounds9 records
Investors8 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
SiPearl M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about SiPearl
What does SiPearl do?
SiPearl designs and sells European-designed, high-performance, energy-efficient server CPUs based on the Arm Neoverse V1 architecture for HPC, AI, and data center workloads. Its lead product, Rhea1, is a 61-billion-transistor 80-core CPU with HBM, DDR5, and PCIe Gen5 manufactured on TSMC's 6nm process, and will equip JUPITER, Europe's first exascale supercomputer. The next-generation Athena1 extends the portfolio to sovereign, security-focused government, defense, and aerospace applications.
Is SiPearl a public or private company?
SiPearl is a private company. It is classified as venture growth investor backed and is currently operating.
When was SiPearl founded?
SiPearl was founded in 2019. It employs 101 to 250 people.
Where is SiPearl based?
SiPearl is headquartered in Maisons-laffitte, France, in the Europe region.
How does SiPearl make money?
Two revenue lines are on record. CPU Hardware Sales are the primary driver. The others are series A Funding.
Who are SiPearl's main competitors?
Broad incumbents on record are Intel, AMD and NVIDIA. Emerging players are Graphcore, Tenstorrent, Kalray and Esperanto Technologies. Direct peers are Ampere Computing, Fujitsu and Marvell Technology.
Does SiPearl have an API?
No public API is recorded for SiPearl.
What industry is SiPearl in?
SiPearl's product category is High-Performance Server Processors. Its primary akta.pro industry code is HDAHABAC, Compute & Acceleration ICs (CPU/GPU/AI/FPGA/ASIC), with a secondary code of HDAHAJAB, Application Processors & Microprocessors (MPUs/CPUs). Its NAICS code is 541512 and its SIC code is 3571.