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 x233 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
33
11
Models measured
7
3
Best output tok/s
474.0 tok/s
190.0 tok/s
Highest measured peak VRAM
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Street price (latest snapshot)
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Sourced rows only. Peak VRAM is recorded by the person who ran the benchmark, so it is a floor for what the card can hold, not a specification. Price snapshots.
Head-to-head
On the 3 models measured on both cards, DGX Spark x2 leads on 1, DGX Spark x4 on 2. 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).