Apple M4 Ultra (384GB)
The Apple M4 Ultra (384GB) has 384 GB VRAM and 1092 GB/s memory bandwidth. It can run 75 of our 80 tracked models natively in VRAM at 8k context.
With 384 GB LPDDR5X, the Apple M4 Ultra (384GB) is a workstation-tier GPU that can run 75 models natively. It handles 70B-class models at Q4 quantization.
The Apple M4 Ultra (384GB) is the maximum-memory configuration of Apple's M4 Ultra chip, available in the Mac Pro and Mac Studio. Its 384GB unified memory pool shared between CPU and GPU at 1,092 GB/s is large enough to hold the largest publicly available open-weight models — including 405B parameter models at Q4 quantization — entirely in memory without any offloading. MLX and llama.cpp's Metal backend both fully support this configuration for local frontier-scale inference.
Apple M4 Ultra (384GB): 2025 flagship workstation with 384GB unified memory at 1092 GB/s. 32-core CPU (24P+8E).
Runs 405B at Q4 native. 70B at ~25-35 t/s decode. Only platform for single-chip 405B inference.
MLX framework native. llama.cpp Metal fully optimized. No software quirks — current optimization target.
| Vendor | Apple |
| Architecture | Apple M4 Ultra |
| CPU cores | 32 (24P + 8E) |
| VRAM | 384 GB (unified) |
| Memory type | LPDDR5X |
| Memory bandwidth | 1092 GB/s |
| Compute backend | METAL |
| Tier | Workstation |
| Released | 2025 |
| Models (native) | 75 / 80 |
| Models (offload) | 0 / 80 |
Software: MLX gives the best performance on Apple Silicon; llama.cpp Metal backend is a solid alternative. Both are well-supported by Ollama.
Popular models for this GPU
Models this GPU runs natively in VRAM (75)
- GLM-5.1 754B754B · MMLU-Pro 86.5Q2_K · ~13.2 t/s
- GLM-5.2 753B753B · MMLU-Pro 80.6Q2_K · ~14.3 t/s
- GLM-5 744B744B · MMLU-Pro 85.7Q2_K · ~14.3 t/s
- DeepSeek V3 671B671B · MMLU-Pro 75.9Q3_K_M · ~14.6 t/s
- DeepSeek R1 671B671B · MMLU-Pro 85.0Q3_K_M · ~14.6 t/s
- Nemotron 3 Ultra 550B-A55B550B · MMLU-Pro 86.8Q3_K_M · ~9.8 t/s
- MiniMax M1 456B456B · MMLU-Pro 81.1Q5_K_M · ~7.8 t/s
- MiniMax M3428B · MMLU-Pro —Q5_K_M · ~15.7 t/s
- Llama 3.1 405B Instruct405B · MMLU-Pro 73.3Q5_K_M · ~3 t/s
- Llama 4 Maverick 400B400B · MMLU-Pro 80.5Q6_K · ~17.3 t/s
- GLM-4.7 358B358B · MMLU-Pro 84.3Q6_K · ~9.6 t/s
- GLM-4.5 355B355B · MMLU-Pro 84.6Q6_K · ~9.6 t/s
- GLM-4.6 355B355B · MMLU-Pro 84.5Q6_K · ~9.6 t/s
- DeepSeek V4 Flash 284B284B · MMLU-Pro 86.3Q8_0 · ~18.7 t/s
- Qwen3 235B-A22B (MoE)235B · MMLU-Pro 84.4Q8_0 · ~11 t/s
- MiniMax M2.5 229B229B · MMLU-Pro 84.8Q8_0 · ~23.3 t/s
- MiniMax M2.7 229B229B · MMLU-Pro 86.0Q8_0 · ~23.3 t/s
- Step 3.7 Flash198B · MMLU-Pro —Q8_0 · ~21.6 t/s
- Step 3.5 Flash196.81B · MMLU-Pro 84.4Q8_0 · ~21.6 t/s
- Mixtral 8x22B Instruct v0.1141B · MMLU-Pro 40.0BF16 · ~3.3 t/s
- Qwen 3.5 122B-A10B (MoE)122B · MMLU-Pro 86.7BF16 · ~12.7 t/s
- Nemotron 3 Super 120B120B · MMLU-Pro 83.7BF16 · ~10.8 t/s
- GPT-OSS 120B117B · MMLU-Pro 80.7BF16 · ~25.7 t/s
- Llama 4 Scout 109B109B · MMLU-Pro 74.3BF16 · ~7.5 t/s
- GLM-4.5 Air 106B106B · MMLU-Pro 81.4BF16 · ~10.7 t/s
- GLM-4.6V 106B106B · MMLU-Pro 79.9BF16 · ~10.7 t/s
- Qwen 2.5 72B Instruct72B · MMLU-Pro 71.1FP32 · ~3 t/s
- Llama 3.3 70B Instruct70B · MMLU-Pro 68.9FP32 · ~3.1 t/s
- DeepSeek R1 Distill Llama 70B70B · MMLU-Pro 70.0FP32 · ~3.1 t/s
- Llama 3.1 70B Instruct70B · MMLU-Pro 66.4FP32 · ~3.1 t/s
- Mixtral 8x7B Instruct v0.146.7B · MMLU-Pro 29.7FP32 · ~5 t/s
- Command-R 35B35B · MMLU-Pro 33.0FP32 · ~5.8 t/s
- Qwen 3.5 35B-A3B (MoE)35B · MMLU-Pro 84.2FP32 · ~21.4 t/s
- Qwen 3.6 35B35B · MMLU-Pro 85.2FP32 · ~6.1 t/s
- Yi 1.5 34B Chat34.4B · MMLU-Pro 37.0FP32 · ~6.3 t/s
- Qwen3 32B32.8B · MMLU-Pro 65.5FP32 · ~6.6 t/s
- Qwen 2.5 32B Instruct32.5B · MMLU-Pro 69.0FP32 · ~6.6 t/s
- Qwen 2.5 Coder 32B Instruct32.5B · MMLU-Pro 50.4FP32 · ~6.6 t/s
- DeepSeek R1 Distill Qwen 32B32.5B · MMLU-Pro 65.0FP32 · ~6.6 t/s
- Nemotron 3 Nano 30B32B · MMLU-Pro 78.3FP32 · ~21.6 t/s
- Gemma 4 31B31B · MMLU-Pro 85.2FP32 · ~6.9 t/s
- Qwen3 30B-A3B (MoE)30B · MMLU-Pro 61.5FP32 · ~21.4 t/s
- Gemma 2 27B Instruct27.2B · MMLU-Pro 38.0FP32 · ~7.8 t/s
- Gemma 3 27B Instruct27B · MMLU-Pro 67.5FP32 · ~8 t/s
- Qwen 3.6 27B27B · MMLU-Pro 86.2FP32 · ~8 t/s
- Bonsai 27B27B · MMLU-Pro 81.5Ternary (Q2_0) · ~99.2 t/s
- Gemma 4 26B (MoE)26B · MMLU-Pro 82.6FP32 · ~16.8 t/s
- Mistral Small 3.1 24B Instruct24B · MMLU-Pro 66.8FP32 · ~9 t/s
- Mistral Small 22B22.2B · MMLU-Pro 49.2FP32 · ~9.6 t/s
- GPT-OSS 20B21B · MMLU-Pro 67.9FP32 · ~16.3 t/s
- Qwen3 14B14.8B · MMLU-Pro 61.0FP32 · ~14.4 t/s
- Qwen 2.5 14B Instruct14.7B · MMLU-Pro 63.7FP32 · ~14.5 t/s
- Phi-4 14B Instruct14B · MMLU-Pro 70.4FP32 · ~15.2 t/s
- Mistral Nemo 12B Instruct12.2B · MMLU-Pro 35.6FP32 · ~17.4 t/s
- Gemma 3 12B Instruct12.2B · MMLU-Pro 60.6FP32 · ~17.5 t/s
- Gemma 4 12B (Unified)12B · MMLU-Pro 77.2FP32 · ~17.1 t/s
- Gemma 2 9B Instruct9.2B · MMLU-Pro 32.0FP32 · ~22.1 t/s
- Llama 3.1 8B Instruct8B · MMLU-Pro 48.3FP32 · ~26.4 t/s
- DeepSeek R1 Distill Llama 8B8B · MMLU-Pro 41.0FP32 · ~26.4 t/s
- Qwen3 8B8B · MMLU-Pro 56.7FP32 · ~26.3 t/s
- Qwen 2.5 7B Instruct7.6B · MMLU-Pro 56.3FP32 · ~28.3 t/s
- Mistral 7B Instruct v0.37.25B · MMLU-Pro 30.0FP32 · ~29 t/s
- Gemma 3 4B Instruct4B · MMLU-Pro 43.6FP32 · ~52.9 t/s
- Gemma 4 E4B4B · MMLU-Pro 69.4FP32 · ~51.4 t/s
- Phi-3.5 Mini Instruct3.8B · MMLU-Pro 47.4FP32 · ~47.4 t/s
- Llama 3.2 3B Instruct3.2B · MMLU-Pro 24.0FP32 · ~63.6 t/s
- Qwen 2.5 3B Instruct3.1B · MMLU-Pro 32.4FP32 · ~68.8 t/s
- Gemma 2 2B Instruct2.6B · MMLU-Pro 17.8FP32 · ~77.5 t/s
- Gemma 4 E2B2B · MMLU-Pro 60.0FP32 · ~104 t/s
- SmolLM2 1.7B Instruct1.7B · MMLU-Pro 19.0FP32 · ~103.9 t/s
- Qwen 2.5 1.5B Instruct1.5B · MMLU-Pro 16.8FP32 · ~140.1 t/s
- Llama 3.2 1B Instruct1.24B · MMLU-Pro 12.5FP32 · ~167.1 t/s
- Gemma 3 1B Instruct1B · MMLU-Pro 14.7FP32 · ~201.9 t/s
- Qwen 2.5 0.5B Instruct0.5B · MMLU-Pro 10.0FP32 · ~415.9 t/s
- SmolLM2 360M Instruct0.36B · MMLU-Pro 8.0FP32 · ~492 t/s
Too large for this GPU (5)
Frequently asked questions
- How much VRAM does the Apple M4 Ultra (384GB) have?
- The Apple M4 Ultra (384GB) has 384 GB of LPDDR5X with 1092 GB/s memory bandwidth (unified system memory, shared between CPU and GPU).
- What is the Apple M4 Ultra (384GB) best for?
- With 384 GB of VRAM, the Apple M4 Ultra (384GB) is a server-class GPU designed for running the largest open-weight models (70B–405B) at high quantization with ample context.
- What LLMs can the Apple M4 Ultra (384GB) run locally?
- The Apple M4 Ultra (384GB) can run 75 of the 80 open-weight models tracked by CanItRun natively in VRAM at 8k context. Top options include: Llama 3.3 70B Instruct at FP32, Llama 3.1 8B Instruct at FP32, Llama 3.2 3B Instruct at FP32.
- Can the Apple M4 Ultra (384GB) run Llama 3.3 70B Instruct?
- Yes. The Apple M4 Ultra (384GB) runs Llama 3.3 70B Instruct natively in VRAM at FP32 quantization, achieving approximately 3.1 tokens per second.
- Can the Apple M4 Ultra (384GB) run Qwen 3.6 27B?
- Yes. The Apple M4 Ultra (384GB) runs Qwen 3.6 27B natively in VRAM at FP32 quantization, achieving approximately 8 tokens per second.
- Can the Apple M4 Ultra (384GB) run Llama 3.1 8B Instruct?
- Yes. The Apple M4 Ultra (384GB) runs Llama 3.1 8B Instruct natively in VRAM at FP32 quantization, achieving approximately 26.4 tokens per second.