When the market falls, the ghost story comes: SemiAnalysis states that NVIDIA may reduce the SOCAMM DRAM in the Rubin NVL72 cabinet from about 55TB to about 28TB (approximately half the DRAM reduction), and change the mainstream configuration from 192GB modules to 96GB modules to lower the overall cabinet cost and TCO. Micron fell sharply yesterday as a result. But this news is actually a bit like an excuse for the decline, rather than a real demand reduction. The reason is simple: the reduction in configuration is because the memory is too expensive, not because it is no longer needed. And the DRAM for CPU testing has been reduced, while the HBM for GPU has not changed at all. So, this message does not constitute a substantial negative impact on the HBM mainline. It is more like indicating that the price of LPDDR5X/SOCAMM is rising too fast and the supply is too tight, and NVIDIA is starting to control costs by reducing specifications. In terms of impact, it will suppress market expectations for SOCAMM/LPDDR5X demand in the short term, especially causing disturbance to Micron, as MU supplies HBM4 and also promotes SOCAMM2. SK Hynix is less affected as its core logic remains the leading HBM market share. Samsung is looking at HBM4 certification and share repair. Follow up to see if NVIDIA has officially confirmed the Rubin SOCAMM configuration downgrade; Does Micron's financial report indicate changes in SOCAMM2 demand; Can Micron increase its market share in Rubin HBM4. Finally, it is recommended to hold DRAM ETFs. There are too many risks and concerns for individual stocks, and I believe that holding ETFs with storage is convenient