Apple's highest-end Mac Studio configuration launched with up to 512 GB unified memory at 819 GB/s — enough for 70B+ and some 100B+ class models at Q4/Q5. Note: in March 2026 Apple lowered the maximum purchasable configuration to 256 GB due to DRAM shortages; 512 GB units already in the field retain full capability.
| VRAM | 512 GB unified memory |
| Memory Bandwidth | 819 GB/s |
| TDP | 60 W |
| Architecture | ARM, 3nm TSMC |
| Release Year | 2025 |
| MSRP at Launch | $3,999 |
| Inference Speed (Llama 3.1 8B Q4_K_M) | ~170 tokens/sec |
| Inference Speed (Llama 3.3 70B Q4_K_M) | ~50 tokens/sec |
All models below run comfortably in 512 GB unified memory with Q4_K_M quantization.
| Llama 3.3 | Llama 3.3 70B Instruct · 43 GB VRAM · Q4_K_M · ollama run llama3.3 |
| Llama 3.1 Family | Llama 3.1 8B Instruct · 6 GB VRAM · Q4_K_M · ollama run llama3.1 |
| DeepSeek R1 | DeepSeek R1 (671B) · 406 GB VRAM · Q4_K_M · ollama run deepseek-r1:671b |
| Qwen 3 | Qwen 3 235B-A22B (MoE) · 80 GB VRAM · Q4_K_M · ollama run qwen3:235b-a22b |
| Qwen3-Coder | Qwen3-Coder 480B-A35B (MoE) · 291 GB VRAM · Q4_K_M · ollama run qwen3-coder:480b-a35b |
| Gemma 3 | Gemma 3 27B Instruct · 17 GB VRAM · Q4_K_M · ollama run gemma3:27b |
| Mistral Small 3.1 | Mistral Small 3.1 24B · 14 GB VRAM · Q4_K_M · ollama run mistral-small3.1 |
| Phi-4 Family | Phi-4 (14B) · 9 GB VRAM · Q4_K_M · ollama run phi4 |
Install Ollama then run the recommended model for this GPU:
ollama run llama3.3:70b
Yes — the Apple M3 Ultra has 512 GB unified memory and runs Apple's highest-end Mac Studio configuration launched with up to 512 GB unified memory at 819 GB/s — enough for 70B+ and
The Apple M3 Ultra runs Llama 3.1 8B at ~170 tokens/sec with Q4_K_M quantization. For the 70B model it achieves ~50 tokens/sec.
With 512 GB you can run: Llama 3.3, Llama 3.1 Family, DeepSeek R1, Qwen 3, Qwen3-Coder. Use Ollama for the easiest setup: ollama run llama3.3:70b.
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