DGX Spark vs RTX 4090

For running local LLMs · 5 reports across 3 models

Side A

Vendor: nvidia
VRAM: 128GB
Memory: Unified

Side B

Vendor: nvidia
VRAM: 24GB
Memory: Discrete

Tokens per second by model

Model	DGX Spark	RTX 4090
Gemma 4up to 31B	—	149.6n=2
Qwen3.6up to 35B	—	80.0n=2
GLM-5.1	—n=1	—

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