The fourth major generation of the HBM standard, featuring for the first time a 2048-bit wide interface, double that of preceding generations.
Delivering unrivaled memory bandwidth in a compact, high-capacity footprint, has made HBM the memory of choice for AI training. HBM4 is the fourth major generation of the HBM standard, with new power management and RAS features. The Rambus HBM4 Controller provides industry-leading performance to 10.0 Gb/s, enabling a memory throughput of over 2.5 TB/s for training systems, generative AI and other compute-intensive AI workloads.
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Fig.1: HBM bandwidth and capacity comparison. Source: Rambus.
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