DGX Spark x2 vs RTX 3090

Name: DGX Spark x2 vs RTX 3090
Creator: DiggTop

GPU AGPU B

Best verified output tok/s per model (single-stream generation). Hover a value for the quant.

DGX Spark x210 verified runs · best 474.0 tok/s

RTX 309014 verified runs · best 709.5 tok/s

Model	DGX Spark x2	RTX 3090
LFM2.5-1.2B-Instruct-GGUF	—	709.5 Q4_K_M
Qwen3.5-0.8B-MTP-GGUF	—	476.1 Q6_K_XL
Qwen3.8-Flash-Next-hibrid48	474.0 NVFP4 (output head)	—
NVIDIA-Nemotron-3.5-Lightning-30B-A3B-GGUF	—	353.7 NVFP4
LFM2.5-2.6B-GGUF	—	305.6 Q4_K_M
Qwen3.5-4B-MTP-GGUF	—	240.4 Q6_K_XL
Qwen3.8-27B-EXL3-3.5bpw	—	164.6 EXL3-3.5bpw
Qwen3.5-9B-MTP-GGUF	—	164.3 Q6_K_XL
DeepSeek-V4.1-Flash	154.0 EXL3 2.9bpw	—
Qwen3.8-27B	—	152.4 EXL3 4.00bpw
Qwen/Qwen3.8-27B	—	136.8 AWQ-INT4 W4A16
Qwen3.8-27B-GGUF	—	81.9 Q4_K_XL
Qwen3.8-Flash-Next	80.0 NVFP4	38.6 EXL3 2.50bpw
GLM-5.3-Flash-NVFP4	46.3 NVFP4	—
Ornstein3.6-27B-MTP-NSC-ACE-SABER-GGUF	—	32.9 Q4_K_M

Head-to-head (models tested on both): DGX Spark x2 1 · RTX 3090 0 · tied 0 · data as of Sep 17, 2026. Full rules: methodology.