Can Qwen 3.5 35B-A3B run on MacBook Pro M3 Pro 18GB?
NO — Won’t fit
Q4_K_M · 4K context · formula estimate
What this means
The checked Q4_K_M build needs about 26.4GB, above this Mac's conservative 15GB working budget.
−11.4GB short
above the working budget
26.4GB
needed at Q4_K_M
Q4_K_M
quant selected
0GB
working headroom
needs 26.4 GBworking budget 15 GB · short 11.4 GB
Where the memory goes
| Component | Detail | GB |
|---|---|---|
| Model weights | Q4_K_M GGUF (22 GB) + mmap overhead | 23.1 |
| KV cache | 4K context window | 2.5 |
| Runtime | macOS inference app + compute buffers | 0.8 |
| Total needed | at Q4_K_M, 4K context | 26.4 |
| Working budget | 18 GB unified memory − conservative macOS reserve | 15 |
| Headroom | memory shortfall | −11.4 |
Pick your quant
| Quant | Download | Memory | Estimated speed | Verdict |
|---|---|---|---|---|
| Q3_K_M | 16.4 GB | 20.5 GB | — | ✕ Won't fit |
| IQ4_XS | 17.5 GB | 21.6 GB | — | ✕ Won't fit |
| Q4_K_S | 20.7 GB | 25 GB | — | ✕ Won't fit |
| MXFP4 | 21.6 GB | 25.9 GB | — | ✕ Won't fit |
| Q4_K_M ★ | 22 GB | 26.4 GB | — | ✕ Won't fit |
| Q5_K_M | 26.2 GB | 30.8 GB | — | ✕ Won't fit |
| Q6_K | 28.9 GB | 33.6 GB | — | ✕ Won't fit |
| Q8_0 | 36.9 GB | 42 GB | — | ✕ Won't fit |
Other models on this Mac
Qwen 3.5 35B-A3B on other MacBook Pro M3 Pro configurations
FAQ
Can the MacBook Pro M3 Pro · 18GB run Qwen 3.5 35B-A3B?
Not with the quants currently tracked. The selected Q4_K_M build needs about 26.4GB, above the 15GB working budget.
Which Qwen 3.5 35B-A3B quant should I use on this Mac?
None of the tracked quants fit this configuration safely. Choose a smaller model or a Mac with more unified memory.
Which app should I use for Qwen 3.5 35B-A3B on this Mac?
Start with LM Studio. This page gives the complete point-and-click walkthrough.
Are these speeds measured on a MacBook Pro M3 Pro?
No. The range is a formula estimate based on memory bandwidth, model size, active parameters, cooling, and a 4K context. The app, backend, thermals, and prompt can change real performance.