About SiPearl

SiPearl is the European fabless designer of sovereign secure high-performance energy‑efficient CPUs for HPC, AI and data centres. These CPUs will help address strategic challenges in security, defence, medical research, energy, climate and engineering with a reduced environmental footprint.

In June 2025, SiPearl completed the design of the most complex CPU ever designed in Europe, Rhea1. Featuring 80 Arm Neoverse V1 cores, with 61 billion transistors, it is currently in production at TSMC. The SiPearl CPUs will equip the two first European exascale supercomputers belonging to EuroHPC JU: Rhea1 will be integrated into the JUPITER machine based in Germany and Rhea2 will be part of Alice Recoque in France.

Incubated within the European Processor Initiative (EPI) Consortium and seed‑funded by the European Union, SiPearl employs almost 200 people in France (Maisons‑Laffitte, Grenoble, Massy, Sophia Antipolis), Spain (Barcelona) and Italy (Bologn...