X-HBM – 16X more bandwidth or 10x higher density than traditional HBM (2025) [pdf] (neosemic.com)

NEO Semiconductor has announced X-HBM, a groundbreaking memory technology that promises to revolutionize high-bandwidth memory (HBM) with a staggering 16X increase in data bandwidth and ten times the density of traditional DRAM. Utilizing their innovative 3D X-DRAM architecture, X-HBM achieves densities of up to 300 Gb by stacking hundreds of layers of DRAM cells on a single die, with future projections suggesting capabilities of over 1,000 layers. This technology allows a single X-HBM die to replace multiple existing DRAM dies, drastically reducing costs and power consumption while enhancing overall performance. The significance of X-HBM lies in its potential to address critical memory bottlenecks faced by AI and machine learning applications. By expanding the data bus width from 2,000 to an impressive 32,000 bits through advanced hybrid bonding techniques, X-HBM delivers superior efficiency and speed essential for demanding AI workloads. As the memory landscape moves beyond traditional 2D DRAM, this development could play a pivotal role in unlocking the future capabilities of AI systems, making it a landmark advancement for the AI/ML community.