Samsung and SK Hynix Begin HBM4 Volume Shipments to Nvidia as Korea's AI Memory Boom Reshapes Trade Balance
Both Korean memory giants confirmed this week that 12-high HBM4 stacks have cleared Nvidia qualification and are now flowing into TSMC's CoWoS-L lines for the Rubin GPU launch, formally opening a memory generation that will set AI-infrastructure economics through the rest of the decade.