Samsung HBM5 Doubles Bandwidth Without Adding Pins

Samsung's upcoming HBM5 memory technology will reportedly double bandwidth without adding pins by running each of its 2048 pins nearly twice as fast as HBM4E. According to a Hot Chips 2026 presentation, pin speed will increase from 14 Gbps to over 28 Gbps. To support this higher speed, internal components including DRAM banks, TSVs, and the base die PHY will also be doubled. Open article →