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Memory, not processors, remains Europe’s supercomputing weakness, Bull CEO says

By Thomson Reuters Oct 2, 2026 | 4:46 AM

By Leo Marchandon

Oct 2 (Reuters) – Europe is increasingly able to source the components used in its supercomputers locally, ​but memory remains the biggest ‌gap in the supply chain, the head of French supercomputer maker Bull said on Friday.

Bull can now source around 70% of the ‌components ​in the machines it ⁠builds in Europe – including ⁠boards, interconnects, cooling systems and increasingly processors – up from 20%-30% five years ago, leaving memory as the last major ​component without a European supplier, Chief Executive Emmanuel Le Roux said.

• ⁠He cited progress on ⁠European processors — SiPearl, in which ​Bull holds a stake, Vsora and Openchip.

• “The ​problem is memory,” he told Reuters at ‌the company’s Angers factory. “We don’t see anything coming.”

• Processors account for 10-20% of a supercomputer’s value, he said.

• Memory ⁠prices have risen sharply and are now one of the industry’s biggest concerns, Le Roux ⁠said. European ‌memory initiatives exist but ⁠would take a long time ​to ‌build.

• Samsung, SK Hynix and Micron ​produce ⁠over 90% of memory worldwide.

• Memory chips hold the data a machine is actively working on; supercomputers need them in vast quantities.

(Reporting by Leo Marchandon; Editing by ​Matt Scuffham)