SiPearl is a fabless semiconductor company that designs European high-performance, energy-efficient microprocessors for sovereign supercomputing, artificial intelligence, and data centres. Initiated as a spin-off of the European Processor Initiative (EPI) consortium, the company builds advanced microprocessors designed to deliver computing power and energy efficiency for demanding high-performance computing workloads with a reduced carbon footprint.

Its flagship product, the Rhea1 CPU, integrates 80 Arm Neoverse V1 cores and is manufactured using advanced semiconductor foundry processes. Designed to power Europe's first exascale supercomputer, JUPITER, Rhea1 aims to ensure technological sovereignty and independence for strategic applications in research, security, defence, and engineering. SiPearl is expanding its product portfolio with subsequent generations and specialized variants such as Athena1 for dual-use applications, supported by strategic partnerships across the European computing and quantum ecosystems.