1. SK hynix is accelerating the development of HBM4 and HBM4E memory, originally planned for mass production in 2026 and 2027 respectively. 2. Now, HBM4 is set for mass production in 2025, and HBM4E will enter mass production in 2026, aligning with NVIDIA's accelerated AI accelerator release cycle. 3. The next-generation HBM4 offers a 40% increase in bandwidth and a 70% reduction in power consumption compared to HBM3E, which is the fastest memory in the world.