Runs more models well (grade B or better)
M3 Ultra
M3 Ultra: 43 · M5 Max (40-core GPU): 37
M3 Ultra runs 43 of 74 open models well and M5 Max (40-core GPU) runs 37. Here is every model on both, with the grade and the speed you would get.
Runs more models well (grade B or better)
M3 Ultra
M3 Ultra: 43 · M5 Max (40-core GPU): 37
Faster on the models both run
M3 Ultra · ×1.1
Median speed ratio over 37 models both load fully in memory.
Most intelligent model it runs well
M3 UltraQwen3.8 27B
M5 Max (40-core GPU)Qwen3.8 27B
| M3 Ultra | M5 Max (40-core GPU) | |
|---|---|---|
| Memory compared | 96 GB (base configuration) | 48 GB (base configuration) |
| Memory bandwidth | 819 GB/s | 614 GB/s |
| Memory type | Unified (shared with the system) | Unified (shared with the system) |
| Backend | Metal | Metal |
| Released | 2025 | 2026 |
Grade and output speed at Q4_K_M with an 8K context; green marks the better of the two.
Estimates from published specs and measurements, calibrated per backend. Your drivers, settings and runtime change the real numbers.
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