Industry Analysis
SK Hynix’s HBM expansion pause reflects margin-driven DRAM arbitrage, not weakening AI demand. This triggers a tech stack ripple: delayed bandwidth alignment between HBM3E and 1.4nm logic chips forces Marvell to recalibrate CoWoS timelines, while PIC firms like IPG Photonics face near-term pressure due to reduced optical I/O deployment density. Tightening U.S.-Dutch EUV export controls raise Samsung and Micron’s advanced DRAM costs, reinforcing SK Hynix and TSMC (Taiwan, China) as structural HBM gatekeepers. Samsung may seize server DRAM share, and NVIDIA could accelerate backing of CXMT as a second source. Over the next 12–24 months, HBM capacity will roll out in steps—favoring TSV and hybrid bonding equipment leaders like ASM International over component vendors exposed to order volatility.
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