Stylized illustration of stacked HBM dies next to a GPU die on an interposer.

GPU Memory in 2026: HBM, KV-Cache, and the Real Bottlenecks Behind LLM Inference

A working engineer’s guide to GPU memory: HBM bandwidth, KV-cache math, fragmentation, and the production patterns that keep large model inference honest.

September 4, 2026 · 9 min · 1772 words · martinuke0
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