Mac Studio, M5 Max, 128GB vs Mac Studio, M5 Ultra, 256GB
Only Mac Studio, M5 Ultra, 256GB holds Qwen3-235B-A22B at Q4_K_M. Mac Studio, M5 Max, 128GB is 25GB short. It costs $4,400 more, and a box that cannot load the model is not a saving.
- Fit
- Won't fit
- Fits
- Headroom
- −25GB
- 103GB
- Est. speed
- —
- 45.2 tok/s
- Cheapest today
- $5,099 at Apple
- $9,499 at Apple
- Per GB of memory
- $40
- $37
- Memory
- 128GB unified memory
- 256GB unified memory
- Usable for a model
- 120GB
- 248GB
- Memory bandwidth
- 614GB/s
- 1.2TB/s
- Storage
- 512GB
- 1TB
- Lowest recorded
- $5,099 in 2d
- $9,499 in 2d
Fit, headroom and speed are computed from each vendor’s published bandwidth and the model’s own size at 8K context. Prices are the cheapest listing we could read on each seller’s page. The arithmetic is here.
Where they actually differ
- Qwen3-235B-A22BWon't fitFits
- DeepSeek-V3Won't fitWon't fit
- Llama-3.3-70BFitsFits
- gpt-oss-120bFitsFits
- Mistral-Large-2411FitsFits
- Llama-4-Scout-17B-16EFitsFits
- Qwen3-32BFitsFits
- Gemma-3-27BFitsFits
- gpt-oss-20bFitsFits
- Llama-4-Maverick-17B-128EWon't fitTight
- Llama-4-BehemothWon't fitWon't fit
Every model we track at Q4_K_M. The rows where the two boxes agree are dimmed, because they are not what you are choosing between.