Runs more models well (grade B or better)
M1 Ultra
Arc A770 16GB: 23 · M1 Ultra: 39
Arc A770 16GB runs 23 of 74 open models well and M1 Ultra runs 39. Here is every model on both, with the grade and the speed you would get.
Runs more models well (grade B or better)
M1 Ultra
Arc A770 16GB: 23 · M1 Ultra: 39
Faster on the models both run
M1 Ultra · ×1.2
Median speed ratio over 23 models both load fully in memory.
Most intelligent model it runs well
Arc A770 16GBQwen3.5 9B
M1 UltraQwen3.8 27B
| Arc A770 16GB | M1 Ultra | |
|---|---|---|
| Memory compared | 16 GB | 64 GB (base configuration) |
| Memory bandwidth | 560 GB/s | 800 GB/s |
| Memory type | Dedicated VRAM | Unified (shared with the system) |
| Backend | Vulkan | Metal |
| Released | 2022 | 2022 |
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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