DGX Spark x2 vs DGX Spark 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 x222 sourced runs · best 474.0 tok/s
DGX Spark x411 verified runs · best 190.0 tok/s
Specs and evidence
| DGX Spark x2 | DGX Spark x4 | |
|---|---|---|
| VRAM | 128 GB | 128 GB |
| Sourced runs on the board | 22 | 11 |
| Models measured | 4 | 3 |
| Best output tok/s | 474.0 tok/s | 190.0 tok/s |
| Highest measured peak VRAM | — | — |
| Street price (latest snapshot) | — | — |
Head-to-head
On the 2 models measured on both cards, DGX Spark x2 leads on 1, DGX Spark x4 on 1. The widest gap is on GLM-5.3-Flash: DGX Spark x2 46.3 tok/s vs DGX Spark x4 124.0 tok/s (DGX Spark x4 168% faster).