Paris, France – November 13, 2025 – Eviden, the Atos Group product brand leading in advanced computing, today announces the launch of BullSequana XH3500, its latest supercomputer built to support convergence of High-Performance Computing (HPC) and Artificial Intelligence (AI) workloads. Designed to scale beyond exascale performance, the BullSequana XH3500 combines cutting-edge hardware with a comprehensive software and application ecosystem, helping organizations accelerate scientific discovery, industrial innovation, and AI-driven breakthroughs.
Eviden has been a leader in HPC for more than 20 years. The BullSequana XH3500 is a natural next step from the BullSequana XH3000, improving its hybrid computing strategy and building on the technology that its predecessor laid down.
The BullSequana XH3500 is at the core of a larger, integrated ecosystem of software, services, and expert support. It has better performance, uses less energy, and can grow with your needs. This ecosystem pulls together the most important parts of deployment, optimization, and innovation into a single framework. This speeds up the time it takes to obtain value and gives companies more flexibility and confidence when dealing with the changing world of HPC and AI.
The BullSequana XH3500 gives you more than 80% more electrical power per square meter and 30% more cooling power per kilowatt than its predecessor, all in the same rack space. These improvements allow for the highest levels of performance density and energy efficiency in the industry. This lets businesses meet their growing computing needs without having to expand their data center space, which is better for the environment and requires less cooling power.
The BullSequana XH3500 is also very flexible because it is open and modular. Customers can mix and match different computing, acceleration, and networking technologies to make configurations that fit their needs, whether they are for simulation and modeling or training AI on a big scale. This unique method protects long-term investments by making sure that there is full technology freedom and no vendor lock-in. This makes it easy to add next-generation CPUs and interconnects when they become available.
The BullSequana XH3500 is the best system for AI companies that need to be thrifty. It is designed to be energy-efficient and cool, since more computing power means more heat. The system has 100% fan-less 5th generation Direct Liquid Cooling (DLC) with warm water support (40°C / 104°F facility supply). This means that the total cost of ownership (TCO) may be cut by a lot, and it can also support heat reuse and free-cooling methods for more environmentally friendly operations. Complementary software technologies help with smart power and resource management by automatically improving performance and energy use in real time.
Bruno Lecointe, VP, global head of HPC, AI and Quantum Computing at Eviden, Atos Group said “The convergence of HPC and AI is redefining how we solve the world’s most complex challenges. Our mission is to accompany our customers throughout the entire lifecycle, accelerating applications, reducing time-to-solution, and maximizing the value and impact of their HPC-AI investments. With a modular architecture able to integrate diverse CPU, GPU and AI accelerators, the BullSequana XH3500 will support customers in meeting the demands of today’s AI factories and supercomputing centers, while its hybrid architecture lays the foundation for future technologies, including quantum computing.”
Addison Snell, CEO of Intersect360 Research highlighted “The BullSequana XH3500 addresses the top needs cited by users in our surveys, to bring AI capabilities to scientific and technical applications while still maintaining a focus on high-performance computing. By connecting AI to scientific discovery, Eviden is delivering application-ready deployments that are driven by real-world use cases. Eviden merges the vision of AI with the forefront of scientific discovery. Importantly, Eviden does this without locking into one vendor’s roadmap, which allows organizations to maintain flexibility and adapt quickly to innovation. And the modularity of the BullSequana XH3500 can be tailored to specific application needs with energy efficiency and the ability to incorporate new technologies over time.”
