DGX Spark x3 vs RTX PRO 6000 Blackwell x4
Best sourced output tok/s per model (single-stream generation) — engine and version, quantization, context and a source link on every row. Hover a value for the quant.
DGX Spark x32 sourced runs · best 152.9 tok/s
RTX PRO 6000 Blackwell x49 verified runs · best 231.6 tok/s
Specs and evidence
| DGX Spark x3 | RTX PRO 6000 Blackwell x4 | |
|---|---|---|
| VRAM | 128 GB | 384 GB |
| Sourced runs on the board | 2 | 9 |
| Models measured | 2 | 1 |
| Best output tok/s | 152.9 tok/s | 231.6 tok/s |
| Highest measured peak VRAM | — | — |
| Street price (latest snapshot) | — | — |
Head-to-head
Only one model has been measured on both cards (DeepSeek-V4.1-Flash). On that single data point DGX Spark x3 records 46.0 tok/s and RTX PRO 6000 Blackwell x4 records 231.6 tok/s — treat it as one data point, not a ranking.