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Your 128K Context Fits on a 4090 — If You Quantize the KV Cache

This story is from 2026-10-19. It is preserved in the archive; the latest stories are on the live feed.

Researched October 2026. Sizing math from public model cards and the vLLM docs; not my own benchmarks. In my last post I showed that a 128K context window can push a 7B model from 17 GB to 33 GB of VRAM — and that you have three moves, in order of cost-effectiveness: quantize the cache, pick a GQA-…

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  1. 2026-10-19 06:10 · DEV Community — AI
    Your 128K Context Fits on a 4090 — If You Quantize the KV Cache

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