Device: Apple M4 Max (128GB)
Category: mac
Memory: 128 GB (unified), usable for models: 96 GB
Memory bandwidth: 546 GB/s
MSRP (USD): 3499
TDP: 145 W
Best runtime: MLX direct / Ollama (MLX backend)
Notes: Top M4 Max config. 75% rule at ≥64GB = 96GB confirmed usable (matches 128GB M1 Ultra precedent from stencel.io). Fits 70B models at full precision or Q8; handles 405B at lower quants.