Yes, just — 0.3 GB spare
Ministral 3 8B at Q4_K_M fits your GeForce RTX 4070 Laptop entirely on the GPU at 8K context, at an estimated 31 tokens per second. Past 10K 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 · 5.0 GB
Apache 2.0
Released Dec 2025
Vision
Mistral's 8B with images in. Plain GQA, so budget more KV cache than Qwen3.5 9B at the same context.
The VRAM budget
weights 5.0 GB
Weights 5.0 GB
KV cache @ 8K 1.06 GB
Runtime overhead 0.6 GB
Free 0.3 GB of 7.0 GB
Quantisation ladder
| Quant | Weights | Total @ 8K | Max context | Tok/s | Quality | Fit |
|---|---|---|---|---|---|---|
| F16 | 16.6 GB | 18.3 GB | — | ~2.9 | Reference | 11.3 GB over |
| Q8_0 | 8.8 GB | 10.5 GB | — | ~7.7 | −0.1% ppl | 3.5 GB over |
| Q6_K | 6.8 GB | 8.5 GB | — | ~13 | −0.4% ppl | 1.5 GB over |
| Q5_K_M | 5.9 GB | 7.6 GB | 3K | ~20 | −0.8% ppl | 0.6 GB over |
| Q4_K_M | 5.0 GB | 6.7 GB | 10K | 31 | −1.9% ppl | Recommended |
| Q3_K_M | 4.1 GB | 5.7 GB | 17K | 38 | −5.4% ppl | Long context |
| Q2_K | 3.5 GB | 5.1 GB | 21K | 45 | −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.
How to run it
$ llama-server \
-hf mistralai/Ministral-3-8B-Instruct-2512:Q4_K_M \
-c 8192 -ngl 99
The engine underneath most of the others. Every knob is exposed. More on llama.cpp.
01Download is 5.0 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 0.3 GB is spare, so a long system prompt can still push it over. Its real ceiling here is 10K context.