A complete breakdown of HBM system architecture, from DDR roots to GDDR7, PIM and HBF alternatives
blaizedsouza · x · 2026-09-14
A systematic overview of HBM's system architecture, tracing its JEDEC standards and DDR historical roots, and explaining how it became AI's most critical memory component.
The article also surveys today's alternatives for AI compute — GDDR7, SRAM, LPDDR6 arrays, PIM, disaggregated memory pools, and HBF — with a link to a deeper follow-up piece. Useful for understanding the memory wall and AI chip memory choices.
Related event: Deep Dive on HBM: Thermal Gradient Is the Top Scaling Challenge(2 posts)→
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