X @郭明錤 (Ming-Chi Kuo)

Technology & Production Challenges - CoWoP faces significant uncertainties and challenges in mass production and commercialization [1] - Implementing SLP in CoWoP is far more challenging than Apple's use case, involving approximately 10,000 times the system power, less than half the line width and spacing, more than three times the layer count, and 100 times the area [2] - Expectation that CoWoP will reach mass production and be deployed in Rubin Ultra by 2028 seems overly optimistic without concrete test data [3] Strategic & Competitive Landscape - Apple invested in SLP R&D as early as 2013, with mass production starting in 2017, requiring four years of collaboration across the supply chain [1] - Nvidia may not possess stronger control over technology and the supply chain than Apple did during SLP adoption [2] - TSMC is developing CoPoS, targeting mass production around the same time as CoWoP (post-2028), potentially prioritizing it due to its focus on manufacturing efficiency [3] - Introducing two major, unproven technologies (CoWoP and CoPoS) within the same year carries considerable risk, posing a challenge to CoWoP's 2028 mass production goal [3]