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 Spark52 sourced runs · best 86.8 tok/s
RTX 4090 D2 verified runs · best 70.9 tok/s
Specs and evidence
DGX Spark
RTX 4090 D
VRAM
128 GB
24 GB
Sourced runs on the board
52
2
Models measured
9
1
Best output tok/s
86.8 tok/s
70.9 tok/s
Highest measured peak VRAM
—
23.5 GB
Street price (latest snapshot)
—
—
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
Only one model has been measured on both cards (Qwen3.8-27B). On that single data point DGX Spark records 56.0 tok/s and RTX 4090 D records 70.9 tok/s — treat it as one data point, not a ranking.