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text model · Ornith · macOS

Can I run Ornith 1.0 35B on Apple M3 Ultra (256GB)?

Compatibility verdict VRAM threshold engine
Yes, it runs GPU accelerated

Yes. Ornith 1.0 35B runs on Apple M3 Ultra (256GB) at Q4_K_M (~23.2 GB of ~192 GB usable).

Needs ~23.2 GB Device usable ~192 GB

Runs at Q4_K_M using ~23.2 GB of ~192 GB usable. You have room for FP16 for higher quality.

That figure is at a 4k context and moves about ±15% as context length changes. Apple M3 Ultra (256GB) leaves ~168.8 GB of headroom, room to step up to FP16 for higher quality.

Q4_K_M needed
~23.2 GB
Usable on device
~192 GB
Device memory
256 GB
Best quant
Q4_K_M
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Which quant fits

Quant ladder vs ~192 GB usable
Q2_K
~16.9 GB
Q3_K_M
~19.3 GB
Q4_K_M
~23.2 GB
Q5_K_M
~27.1 GB
Q6_K
~30.9 GB
Q8_0
~39.2 GB
FP16
~71.2 GB
The line marks Apple M3 Ultra (256GB)'s ~192 GB budget; rungs past it are too large.

Run it

Install commands macOS

Pick your tool. All 3 load the same Q4_K_M weights.

Ollama
$ ollama run ornith:35b
llama.cpp
$ llama-cli -hf deepreinforce-ai/Ornith-1.0-35B-GGUF:Q4_K_M
LM Studio
$ lms get deepreinforce-ai/Ornith-1.0-35B-GGUF
Model Ornith
Parameters
35B (MoE, 3B active)
Q4_K_M size
21 GB
Q8_0 size
37 GB
Context
256k
Ollama tag
ornith:35b
Full Ornith 1.0 35B requirements →
Device macOS
Memory
256 GB unified
Usable for weights
~192 GB
Power draw
~270 W
Best runtime
MLX direct / Ollama (MLX backend)
Best models for Apple M3 Ultra (256GB) →

You could also run

Run Ornith 1.0 35B on other hardware

FAQ

Can Apple M3 Ultra (256GB) run Ornith 1.0 35B?

Yes. Ornith 1.0 35B runs on Apple M3 Ultra (256GB) at Q4_K_M (~23.2 GB of ~192 GB usable).

How much memory does Ornith 1.0 35B need?

Apple M3 Ultra (256GB) has room to spare. At Q4_K_M the weights are ~21 GB; with KV cache and runtime overhead, budget ~23.2 GB at a 4k context. It is a Mixture-of-Experts model (35B total / 3B active), so all experts must stay in memory; memory tracks total params, not active params.

What is the best tool to run Ornith 1.0 35B on macOS?

LM Studio for a simple setup; mlx-lm for the most speed. vLLM is NOT a Mac tool, it is a CUDA/Linux serving engine. Unified memory is not a fixed VRAM slice; ~70% is usable for weights.

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Sources

Weights are measured from GGUF files; KV cache and overhead are computed, so totals can vary ~15% with context and runtime. Any tok/s is a bandwidth estimate. See methodology.