Breaking the Memory Wall: Samsung and Qualcomm Bury Compute Directly Under DRAM
AccBalanced · x · 2026-07-31
Explores the shared architectural strategy by Samsung, Qualcomm, and others to tackle the AI inference 'memory wall': burying the compute directly underneath the DRAM.
- The Memory Wall: The bottleneck isn't memory capacity, but the physical distance data must travel.
- Energy Cost: Decode energy consumption is dominated by data movement, which is proportional to wire length. In traditional setups, data crossing the silicon interposer from HBM to GPU causes massive capacitance and energy loss.
- The Solution: By minimizing the physical distance between compute and storage, transmission latency and energy dissipation are fundamentally reduced.
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