2 posts
Posts tagged VRAM
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Qwen3.6 27B: How Much VRAM It Really Needs
A 27B model that uses half the KV cache of a Llama 3 8B. The hybrid architecture breaks the usual calculation — and decides, for less than 1 GB, which cards are left out.
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How much VRAM an LLM really uses
The back-of-the-envelope math — parameters times bits — is off by several gigabytes, because it ignores the KV cache. Here is the full calculation, with the formula, the numbers and how to verify it on your own GPU.