SiPearl Rhea brings HBM2E into Europe's sovereign HPC push

Rhea is not a high-volume memory catalyst yet, but it is a useful design signal. The processor includes 64 GB of on-package HBM2E and supports up to 2 TB of DDR5 per socket, showing that sovereign HPC projects are also adopting bandwidth-heavy memory architectures. Availability is still scheduled around the end of 2026, so the near-term market effect is limited, but the design reinforces HBM's spread beyond GPU-only AI accelerators.