extra large model · Officially released product · Updated 2026-09-06
Integrated memory 512GB · Usable space for model approximately 480GB
Mac Studio M3 Ultra 512GB Local LLM Speed/Memory/Electricity Rate
With 819 GB/s integrated memory bandwidth and 512GB of high-capacity memory, it is the M3 generation highest-spec workstation that serves as the standard reference point for large-scale open model benchmarks.
Core specifications
- available memory
- 480GB
- Memory bandwidth
- 819GB/s
- local LLM sustained load
- about 230W
- Korean price range (KRW)
- 2,400–2,600 × KRW 10,000
a person who fits well
- Utilizes 480GB of available memory
- Quiet finished product composition
- GLM-5.3-Flash (MoE) level local inference
Check before purchasing
Unified memory is advantageous for loading large models, but CUDA-specific tools and multi-GPU workflows should be explored separately.
4K context · Q4 model-specific expected performance
| Model | required memory | Decode | First token | Prefill |
|---|---|---|---|---|
| Gemma 4 12B MLX 4-bit | 8GB | 83.5 ~ 92.8 tok/s | 3.9 ~ 5.2 s | 785 ~ 1,060 tok/s |
| GLM-5.3-Flash (MoE) MLX 4-bit | 190.21GB | 55.5 ~ 61.6 tok/s | 19.3 ~ 26.1 s | 157 ~ 212 tok/s |
Single-user expected range and may vary depending on runtime, cooling, and quantization files.
Frequently Asked Questions
Which local LLM can be run on the Studio M3 Ultra 512GB?
Gemma 4 12B, GLM-5.3-Flash (MoE), etc. can be compared with 4K input and device-specific recommended formats. The required memory varies depending on the model and context length.
What is the local LLM computing power of the Studio M3 Ultra 512GB?
Expected to be around 230W under sustained load, with an actual range estimated between 180–270W.
Are the displayed token speeds ground truth?
This is an estimated range calibrated to the calculator against official hardware specifications and verified benchmark ranges. Runtime, cooling, quantization may vary depending on file and context length.