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Nvidia's Rubin expected to use mostly 12-layer HBM4 despite reported 8-layer shift
What happened
Nvidia's next-generation Rubin AI accelerators are expected to rely predominantly on 12-layer HBM4 high-bandwidth memory, despite reports that Nvidia has asked Samsung Electronics and SK hynix to increase supplies of 8-layer products. The source does not state the cause of the differing assessments; it notes that the differing assessments suggest changes in memory configurations do not necessarily signal weaker HBM demand, and that manufacturing constraints and supply shortages are expected to support memory prices in 2027. The event remains an expectation/report and the final configuration is not confirmed.
Impact and signal
Medium impactImpact score: 40/100
Affected components and suppliers
12-layer HBM48-layer HBM4
HBM4RubinNvidiamemory configuration
Source and time
Source: DigiTimes Asia · 10/14/2026 · View original source
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