Apple Mac Studio (M5 Ultra, 64-core GPU) vs 1x RTX PRO 6000 Blackwell
The Apple Mac Studio (M5 Ultra, 64-core GPU) gives a model 192 GB to work in (an assumed figure), against 96 GB on the 1x RTX PRO 6000 Blackwell. The 1x RTX PRO 6000 Blackwell has 1.5× the memory bandwidth (1,792 against 1,200 GB/s), which sets the ceiling on generation speed. The largest 4-bit model each holds at 8,192 tokens of context: GLM-5.3 Flash on the Apple Mac Studio (M5 Ultra, 64-core GPU), Nemotron 3 Super 120B-A12B on the 1x RTX PRO 6000 Blackwell. The cheapest 1x RTX PRO 6000 Blackwell lists for about $15,334 more than the cheapest Apple Mac Studio (M5 Ultra, 64-core GPU). Rows where the two differ are tinted.
Apple unified memory
Apple Mac Studio (M5 Ultra, 64-core GPU)
The lower M5 Ultra Mac Studio. 256GB is the largest memory option Apple sells for this chip, which fits the large open-weight MoE models at 4-bit.
gpt-oss-20b, 4-bit: 171 tok/s
Single GPU
1x RTX PRO 6000 Blackwell
96 GB on one card, so 70B dense at 8-bit or ~120B-class MoE models at 4-bit with no multi-GPU split. The GPU price has nearly doubled since launch.
gpt-oss-20b, 4-bit: 287 tok/s
| Specification | Apple Mac Studio (M5 Ultra, 64-core GPU) | 1x RTX PRO 6000 Blackwell |
|---|---|---|
| Kind | Apple unified memory · Apple | Single GPU · DIY |
| Chip or GPUs | M5 Ultra (30-core CPU, 64-core GPU) | RTX PRO 6000 Blackwell Workstation Edition |
| Memory | 96 GB, 256 GB | 96 GB VRAM + 128 GB RAM |
| Memory for models | 192 GB (Default GPU limit)assumption | 96 GB (VRAM) |
| Other memory figure | 248 GB (Limit raised with sysctl)assumption | none |
| Memory bandwidth | 1,200 GB/s | 1,792 GB/s |
| Price | ~$5,499–$9,499 | ~$20,833 (sum of parts) |
| Largest at 4-bit, 8k context | GLM-5.3 Flash | Nemotron 3 Super 120B-A12B |
| Software | Metal, MLX | CUDA, Vulkan |
| Power | 480 W | 1200 W power supply |
What each one runs
Every model in the catalog that at least one of the two holds at 4-bit with 8,192 tokens of context. Copper speeds are measured medians; outlined ones are estimates. Rows where only one fits, or where the speed differs by more than a quarter, are tinted.
| Model | Apple Mac Studio (M5 Ultra, 64-core GPU) | 1x RTX PRO 6000 Blackwell |
|---|---|---|
| MiniMax M3428B, 23B active · 243.3 GB file | Fits with raised limitassumed limit~28–51 tok/sestimate | does not fit |
| Qwen3.5 397B-A17B397B, 17B active · 227.3 GB file | Fits with raised limitassumed limit~38–68 tok/sestimate | does not fit |
| GLM-5.3 Flash320B, 18B active · 186.0 GB file | ~36–63 tok/sestimate | does not fit |
| Hy3295B, 21B active · 169.6 GB file | ~31–55 tok/sestimate | does not fit |
| MiniMax M2.7228.7B · 129.3 GB file | – | does not fit |
| Qwen3.8 Flash-Next125B, 6B active · 111.4 GB file | ~70–124 tok/sestimate | does not fit |
| Nemotron 3 Super 120B-A12B120B, 12B active · 81.0 GB file | ~46–82 tok/sestimate | ~51–75 tok/sestimate |
| Qwen3.5 122B-A10B122B, 10B active · 71.3 GB file | ~64–113 tok/sestimate | 98 tok/smedian of 1 run |
| Mistral Medium 3.5 128B128B · 69.8 GB file | ~12–15 tok/sestimate | ~12–18 tok/sestimate |
| GLM-4.5-Air106B, 12B active · 68.0 GB file | ~48–86 tok/sestimate | 101 tok/smedian of 1 run |
| Mistral Small 4 119B (2603)119B, 6.5B active · 67.6 GB file | ~101–179 tok/sestimate | ~112–164 tok/sestimate |
| Llama 4 Scout 17B-16E Instruct109B, 17B active · 60.9 GB file | ~39–70 tok/sestimate | ~44–64 tok/sestimate |
| gpt-oss-120b117B, 5.1B active · 58.5 GB file | 100 tok/smedian of 3 runs | 202 tok/smedian of 4 runs |
| Qwen3 Coder Next80B, 3B active · 45.2 GB file | 111 tok/smedian of 1 run | 91 tok/smedian of 1 run |
| Llama 3.3 70B Instruct70B · 39.6 GB file | 24 tok/smedian of 3 runs | 32 tok/smedian of 1 run |
| Nemotron 3.5 Lightning 30B-A3B30B, 3B active · 23.7 GB file | 196 tok/smedian of 1 run | ~175–256 tok/sestimate |
| Qwen3.6 35B-A3B35B, 3B active · 20.8 GB file | 161 tok/smedian of 2 runs | ~233–341 tok/sestimate |
| Ornith 1.5 35B-A3B35B, 3B active · 20.2 GB file | ~214–382 tok/sestimate | ~240–350 tok/sestimate |
| Qwen3 Coder 30B-A3B Instruct30.5B, 3.3B active · 17.3 GB file | ~199–354 tok/sestimate | ~222–324 tok/sestimate |
| Gemma 4 31B IT30.7B · 17.1 GB file | 41 tok/smedian of 2 runs | 62 tok/smedian of 1 run |
| Granite 4.2 30B29.3B · 16.8 GB file | ~49–61 tok/sestimate | ~49–77 tok/sestimate |
| Qwen3.8 27B27B · 16.2 GB file | 52 tok/smedian of 2 runs | ~50–79 tok/sestimate |
| Gemma 4 26B-A4B IT25.2B, 3.8B active · 15.9 GB file | ~155–277 tok/sestimate | 197 tok/smedian of 1 run |
| Qwen3.6 27B27B · 15.7 GB file | ~52–65 tok/sestimate | ~52–82 tok/sestimate |
| Devstral Small 2 24B (2512)24B · 13.3 GB file | ~61–77 tok/sestimate | ~61–96 tok/sestimate |
| gpt-oss-20b21B, 3.6B active · 10.8 GB file | 171 tok/smedian of 1 run | 287 tok/smedian of 3 runs |
| Phi-414.7B · 8.3 GB file | ~99–123 tok/sestimate | ~99–155 tok/sestimate |
| Ministral 3 14B Reasoning (2512)13.9B · 7.7 GB file | ~107–133 tok/sestimate | ~107–167 tok/sestimate |
| Gemma 4 12B IT11.95B · 6.6 GB file | ~124–154 tok/sestimate | ~123–194 tok/sestimate |
| Qwen3.5 9B9B · 5.3 GB file | ~155–193 tok/sestimate | ~155–243 tok/sestimate |
| Granite 4.2 8B8.8B · 5.2 GB file | ~159–198 tok/sestimate | ~159–249 tok/sestimate |
| Gemma 4 E4B IT8B · 5.0 GB file | ~290–361 tok/sestimate | ~289–454 tok/sestimate |
| Qwen3 8B8.2B · 4.7 GB file | ~175–218 tok/sestimate | 174 tok/smedian of 1 run |
| Llama 3.1 8B Instruct8B · 4.6 GB file | ~179–223 tok/sestimate | 144 tok/smedian of 2 runs |
| Qwen3.5 4B4B · 2.6 GB file | ~321–400 tok/sestimate | ~321–503 tok/sestimate |
Full pages: Apple Mac Studio (M5 Ultra, 64-core GPU) · 1x RTX PRO 6000 Blackwell · check a different quant or context length