High-bandwidth memory (HBM)

While a standard DDR5 module relies on a narrower bus operating at exceptionally high clock speeds, HBM utilizes a highly parallelized, wide-interface architecture.

For example, a single Micron HBM cube features a 1024-bit-wide data interface — supporting 32 independent channels — which is 16 times wider than that of a standard DDR5 module. This allows HBM to move vast amounts of data at much lower energy per bit. 

Additionally, HBM is integrated directly into a system-in-package (SiP) alongside the CPU or GPU via a silicon interposer, shortening the physical distance data must travel.

Yes. HBM is designed to use less energy for each bit of data transferred. Because it sits close to the processor and uses shorter connections, it reduces power consumption while still delivering high performance.

Micron leverages its proprietary 1β (1-beta) DRAM node, low-power circuit design techniques and advanced signal/power integrity solutions to minimize power consumption. By reducing current draw and lowering power per bit, data centers can achieve significant total cost of ownership (TCO) savings and operate more sustainable AI infrastructure.

The biggest advantage of HBM is its ability to move extremely large amounts of data very quickly. This high data throughput keeps processors busy rather than waiting for data, which is critical for performance-intensive applications like AI and advanced computing.