GPU comparison
NVIDIA DGX Spark (GB10, 128GB) vs NVIDIA RTX 4070 (12GB) for local LLMs
How the two stack up for running open-source LLMs locally — memory, bandwidth, price, and how many of the 34 tracked models each one can run.
| NVIDIA DGX Spark (GB10, 128GB) | NVIDIA RTX 4070 (12GB) | |
|---|---|---|
| Memory | 128.0 GB | 12.0 GB |
| Bandwidth | 273 GB/s | 504 GB/s |
| Price (approx) | $4,699 | $549 |
| LLMs it runs | 30 of 34 | 13 of 34 |
| Best model it runs | Gemma 4 31B · 11–16 tok/s | Devstral Small 2 24B · 35–53 tok/s |
The NVIDIA DGX Spark (GB10, 128GB) runs 17 more of the tracked models (30 vs 13), thanks to its 128.0 GB of memory. The NVIDIA RTX 4070 (12GB) has more memory bandwidth (504 GB/s), so it generates tokens faster at the same model and quant.