SiPearl designs high-performance, energy-efficient processors intended for supercomputing and AI workloads, including the Rhea1 CPU. The company was launched in January 2020 under the European Processor Initiative and was seed funded by the European Union. SiPearl has built a processor team of about 200 employees across France, Spain, and Italy and established sovereign infrastructure with data centres and emulation servers in France for design work. Rhea1, conceived as the most complex processor ever designed in Europe, contains more than 61 billion transistors across 80 Arm Neoverse V1 cores and has taped out for manufacturing at TSMC in Taiwan. Rhea1 is slated to equip the CPU cluster of JUPITER, the first European exascale supercomputer operated by Jülich Supercomputing Centre. The company is advancing industrialization and R&D toward next-generation processors targeting supercomputing, data centres, AI, and enterprise markets.

Total raised

$37M

Funding rounds

1

Latest round

Series A

Latest activity

Jul 2025