GPU comparison
Mac Studio M3 Ultra (96GB) vs NVIDIA DGX Spark (GB10, 128GB) for local LLMs
How the two stack up for running open-source LLMs locally — memory, bandwidth, price, and how many of the 64 tracked models each one can run.
| Mac Studio M3 Ultra (96GB) | NVIDIA DGX Spark (GB10, 128GB) | |
|---|---|---|
| Memory | 96.0 GB | 128.0 GB |
| Bandwidth | 819 GB/s | 273 GB/s |
| Price (approx) | $5,299 | $4,699 |
| LLMs it runs | 55 of 64 | 57 of 64 |
| Best model it runs | Qwen3.8 27B · 17–25 tok/s | Qwen3.8 Flash Next (MoE) · 47–70 tok/s |
The NVIDIA DGX Spark (GB10, 128GB) runs 2 more of the tracked models (57 vs 55), thanks to its 128.0 GB of memory. The Mac Studio M3 Ultra (96GB) has more memory bandwidth (819 GB/s), so it generates tokens faster at the same model and quant.