M4 Ultra
93 AI models fit in 128 GB VRAM at Q4 native. 3 more run with CPU offloading. Real benchmarks below.
llama.cpp 0.2.x · CUDA 12 · Ubuntu 22.04 · Prices verified on Amazon · methodology →
Execution Context
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Full Specifications
Apple · 2025-03
| VRAM | 128 GB Unified Memory |
| Bandwidth | 1092 GB/s |
| FP16 TFLOPS | 28.4 |
| AI Score | 90 / 140 |
| Tensor Cores | 32 |
| TDP | 90 W |
| Price Band | Integrada |
| Released | 2025-03 |
AI Benchmarks
Real inference measurements — llama.cpp Q4_K_M
| Task | Result |
|---|---|
| Llama 1B Q4 | 400 tok/s |
| Llama 3B Q4 | 200 tok/s |
| Llama 7B Q4 | 110 tok/s |
| Llama 13B Q4 | 51 tok/s |
| Llama 30B Q4 | 25 tok/s |
| Llama 70B Q4 | 45 tok/s |
| Stable Diffusion 512px | 2.5s / img |
| Whisper Large RTF | 0.3x |
RTF < 1.0 = faster than real time. For Stable Diffusion and Whisper lower is better; for tokens/s higher is better.
Compare M4 Ultra with another GPU
Is an upgrade worth it? Compare specs and real benchmarks side by side.
Open comparator →Compatible AI Models — M4 Ultra
93 models run fully in VRAM · 3 with CPU offloading
Llama 3.3 70B
Flux.1 Dev
Whisper Large V3
Qwen2.5 72B
Stable Diffusion 3.5 Large
FLUX.2 Dev
Llama 3.1 70B
Qwen2.5-Coder 32B
Show all 93 compatible models →
Also runs with CPU offloading (3)
- Llama 3.1 405B 115 GB Q2 How to install →
- Hermes 3 405B 115 GB Q2 How to install →
- Qwen3 235B-A22B 64.6 GB Q2 How to install →
M4 Ultra · Amazon
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M4 Ultra for Local AI
La M4 Ultra es una de las opciones más potentes para IA local gracias a sus 128GB de Unified Memory. Con esta cantidad de memoria puedes cargar modelos de 70B parámetros completos en Q4, incluyendo Llama 3.1 70B, Qwen2.5 72B y DeepSeek R1 Distill 32B sin ningún tipo de offloading. Es la elección óptima para usuarios que quieren el máximo rendimiento sin compromisos.
Los benchmarks reales muestran 110 tokens/segundo en Llama 7B Q4 y 45 tokens/segundo en Llama 70B Q4. Para generación de imágenes, Stable Diffusion 512px tarda aproximadamente 2.5 segundos por imagen, y Whisper Large transcribe a 0.3x tiempo real.
Si buscas correr modelos de código abierto a nivel profesional desde casa, la M4 Ultra elimina prácticamente todas las limitaciones de VRAM. Puedes usar la calculadora de VRAM para verificar cualquier modelo específico, o visitar nuestra guía de inicio para configurar tu entorno local.
Plan your full AI build
M4 Ultra · 128 GB VRAM — configure PSU, RAM, storage and check compatible models.
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The VRAM calculator tells you exactly which quantization you need.
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