SK Hynix has overtaken Samsung as the leading memory chip manufacturer in Q2, reporting $15.6 billion in memory revenue compared to Samsung's $15.2 billion. This shift is largely attributed to increased demand driven by AI development, with Nvidia heavily relying on SK Hynix's products. The surge in demand for high-bandwidth memory (HBM) used in AI accelerators has significantly benefited SK Hynix, allowing it to surpass Samsung in market share and revenue within the memory sector.