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The Memory Wall: Past, Present, and Future of DRAM

Winners & Losers in the 3D DRAM Revolution

16Gb DRAM chips were first made available in high volume 8 years ago but are still the most common today; when introduced they cost around $3 per gigabyte and peaked at nearly $5 before falling back to the $3 range in the past 12 months. While margins are likely to erode as Samsung improves yield, and Micron as they scale production, the memory appetite of AI accelerators will continue to grow – to some extent offsetting the benefit of this new supply. We will likely see offloaded channel control, pure fabric extension on the interconnect, reduced energy per bit over centimeters of distance, and daisy chaining to other rows of HBM further from the host, or to 2 nd tier memory like banks of LPDDR.

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