DeepSeek Engram debate: bandwidth, not storage, is the real constraint

bookwormengr · x · 2026-09-22

In a thread on DeepSeek's Engram, bookwormengr argues sparsity (MoE, sparse attention) is already at 90%; the bigger constraint is HBM bandwidth, which is costlier than storage. DeepSeek's designs target bandwidth, and Engram's extreme KV compression benefits both. He claims Huawei's "HBM" is closer to LPDDR; zephyrz9 counters that HiZQ is real HBM (cHBM).

Related event: DeepSeek Engram Is Semantic Retrieval, Can Cut HBM Needs 40-50%(4 posts)→

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