Yes — with 88.8 GB to spare
Olmo 3 7B Instruct at Q4_K_M fits your Ryzen AI Max+ 395 · 128 GB entirely in unified memory at 8K context, at an estimated 35 tokens per second. There is room for its full 64K window.
Fully in unified memory
8K context
Q4_K_M · 4.1 GB
Apache 2.0
Released 20 Nov 2025
Fully open — training data and code included. Full multi-head attention, so its cache is 4× a GQA 7B at the same context.
The VRAM budget
weights 4.1 GB
Weights 4.1 GB
KV cache @ 8K 2.50 GB
Runtime overhead 0.6 GB
Free 88.8 GB of 96.0 GB
Quantisation ladder
| Quant | Weights | Total @ 8K | Max context | Tok/s | Quality | Fit |
|---|---|---|---|---|---|---|
| F16 | 13.6 GB | 16.7 GB | 64K | 11 | Reference | Long context |
| Q8_0 | 7.2 GB | 10.3 GB | 64K | 20 | −0.1% ppl | Long context |
| Q6_K | 5.6 GB | 8.7 GB | 64K | 26 | −0.4% ppl | Long context |
| Q5_K_M | 4.8 GB | 7.9 GB | 64K | 30 | −0.8% ppl | Long context |
| Q4_K_M | 4.1 GB | 7.2 GB | 64K | 35 | −1.9% ppl | Recommended |
| Q3_K_M | 3.3 GB | 6.4 GB | 64K | 43 | −5.4% ppl | Long context |
| Q2_K | 2.8 GB | 5.9 GB | 64K | 50 | −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. This model interleaves sliding-window layers (4096 tokens, 8 of 32 layers global), which is why its cache barely grows with context.
How to run it
$ ollama pull olmo-3:7b $ OLLAMA_CONTEXT_LENGTH=8192 \ ollama run olmo-3:7b
The default. One binary, a model registry, an OpenAI-compatible port. More on Ollama.
01Download is 4.1 GB. Keep it on an SSD — a first load off a spinning disk takes minutes.
02macOS caps what the GPU may wire down at about 96.0 GB of 128 GB. Raising it with iogpu.wired_limit_mb is possible, and risky.
03There is room to go to the model's full 64K context on this card.