Wire · operational-macro
SK hynix, Samsung push 16-layer HBM4 as Rubin favors 12
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Fusion42 · 9 October 2026 · Fusion42 review
SK hynix and Samsung are advancing 16-layer high-bandwidth memory (HBM4) technology even as Nvidia's Vera Rubin AI platform is expected to primarily use 12-layer HBM4 chips, which eases immediate demand concerns. However, challenges in production yields and advanced packaging remain, and the high wafer usage of advanced HBM sustains pressure on memory supply despite capacity expansions.
This Wire brief tracks SK hynix, and It sits within Fusion42's coverage of Semiconductors.
◆ ◆ The Wire takeaway
You face slower uptake of the newest 16-layer HBM4 chips as Nvidia leans on 12-layer memory, so focus now on optimising production yields and advanced packaging to stay competitive in high-performance chip supply.
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1 source · 9 Oct 2026
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