RTX 3080 vs RTX 3090 x2

Name: RTX 3080 vs RTX 3090 x2
Creator: DiggTop

GPU AGPU B

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

RTX 30809 verified runs · best 277.8 tok/s

RTX 3090 x26 verified runs · best 240.8 tok/s

Model	RTX 3080	RTX 3090 x2
LFM2.5-8B-A1B	277.8 Q6_K	—
Qwen3.6-27B	—	240.8 AutoRound INT4
Qwen3.8-27B	44.4 IQ2_XXS	219.8 AutoRound INT4 + fp8 KV
NVIDIA-Nemotron-3.5-Lightning-30B-A3B	—	197.0 NVFP4
Ornith-1.5-9B	82.8 Q6_K	—
Qwen3.8-27B-Uncensored	74.1 IQ2_XXS	—
Bonsai-27B	72.9 Q1_0	—
gemma-4-12B-it-qat	71.2 Q4_0	—
Ornith-1.5-35B-A3B	64.4 Q4_K_M	—
gpt-oss-20b	57.1 MXFP4	—
Qwen3.8-Flash-Next-REAP-256-duo	—	53.5 Unsloth-Dynamic-Q3_K_XL
Qwen3.8-Flash-Next	—	40.1 Unsloth-Dynamic-IQ3_XXS
Muse-Glimmer-30B	6.0 Q4_K_M	—

Head-to-head (models tested on both): RTX 3080 0 · RTX 3090 x2 1 · tied 0 · data as of Sep 23, 2026. Full rules: methodology.