Yes — with 90.7 GB to spare

DeepSeek-R1-Distill-Qwen 7B at Q4_K_M fits your M1 Ultra · 128 GB entirely in unified memory at 8K context, at an estimated 104 tokens per second. There is room for its full 128K window.

Fully in unified memory 8K context Q4_K_M · 4.3 GB MIT Released Jan 2025

Reasoning traces on a 7B budget. Expect long outputs — budget context accordingly.

What hardware do I need for DeepSeek-R1-Distill-Qwen 7B? →

The VRAM budget

weights 4.3 GB

Weights 4.3 GB KV cache @ 8K 0.44 GB Runtime overhead 0.6 GB Free 90.7 GB of 96.0 GB

Quantisation ladder

Quant	Weights	Total @ 8K	Max context	Tok/s	Quality	Fit
F16	14.2 GB	15.2 GB	128K	31	Reference	Long context
Q8_0	7.5 GB	8.6 GB	128K	59	−0.1% ppl	Long context
Q6_K	5.8 GB	6.9 GB	128K	77	−0.4% ppl	Long context
Q5_K_M	5.0 GB	6.1 GB	128K	89	−0.8% ppl	Long context
Q4_K_M	4.3 GB	5.3 GB	128K	104	−1.9% ppl	Recommended
Q3_K_M	3.5 GB	4.5 GB	128K	129	−5.4% ppl	Long context
Q2_K	3.0 GB	4.0 GB	128K	150	−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

Ollama llama.cpp LM Studio MLX

terminal

$ pip install mlx-lm
$ mlx_lm.generate --model mlx-community/DeepSeek-R1-Distill-Qwen-7B-4bit \
    --max-tokens 512 --prompt "Hello"

Apple's own array framework. The fastest path on Apple Silicon. More on MLX.

01Download is 4.3 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 128K context on this card.

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