Yes, just — 0.7 GB spare

Qwen3.5 9B at Q4_K_M fits your GeForce RTX 4060 entirely on the GPU at 8K context, at an estimated 30 tokens per second. Past 31K the KV cache pushes it over — quantise the cache to q8_0, or step down a quantisation, to go longer.

Fully on GPU 8K context Q4_K_M · 5.4 GB Apache 2.0 Released 28 Feb 2026 Vision

The default for 8–12 GB cards in 2026: beats every older 8B on every published benchmark, with vision.

What hardware do I need for Qwen3.5 9B? →

The VRAM budget

weights 5.4 GB
Weights 5.4 GB KV cache @ 8K 0.25 GB Runtime overhead 0.6 GB Free 0.7 GB of 7.0 GB

Quantisation ladder

QuantWeightsTotal @ 8KMax contextTok/sQualityFit
F16 18.0 GB 18.8 GB ~2.8 Reference 11.8 GB over
Q8_0 9.5 GB 10.4 GB ~7.6 −0.1% ppl 3.4 GB over
Q6_K 7.4 GB 8.2 GB ~14 −0.4% ppl 1.2 GB over
Q5_K_M 6.4 GB 7.2 GB ~23 −0.8% ppl 0.2 GB over
Q4_K_M 5.4 GB 6.3 GB 31K 30 −1.9% ppl Recommended
Q3_K_M 4.4 GB 5.2 GB 64K 37 −5.4% ppl Long context
Q2_K 3.8 GB 4.6 GB 84K 44 −15% ppl Long context

Quality is the published perplexity delta against f16 weights. Max context assumes an f16 KV cache; q8_0 roughly doubles it. Only 8 of its 32 blocks keep a per-token KV cache; the rest are linear-attention, Mamba or convolution blocks with a fixed-size state.

How to run it

terminal
$ llama-server \
    -hf Qwen/Qwen3.5-9B:Q4_K_M \
    -c 8192 -ngl 99

The engine underneath most of the others. Every knob is exposed. More on llama.cpp.

01Download is 5.4 GB. Keep it on an SSD — a first load off a spinning disk takes minutes.
02Close anything else holding VRAM. A browser with hardware acceleration can sit on 1–2 GB.
03Only 0.7 GB is spare, so a long system prompt can still push it over. Its real ceiling here is 31K context.
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