Head to head

RTX 3090 vs A100 80GB

The A100 80GB holds more — 80 GB against 24 GB — which decides what you can load at all. The A100 80GB has more bandwidth at 2039 GB/s, which decides how fast tokens come out once a model fits.

Model (Q4_K_M, 8K)RTX 3090tok/sA100 80GBtok/s
Llama 3.1 8B Runs comfortably 112 Runs comfortably 238
Llama 3.1 70B Won't fit 1.67 Runs comfortably 30.5
Llama 3.2 3B Runs comfortably 246 Runs comfortably 512
Llama 3.2 1B Runs comfortably 650 Runs comfortably 1319
Llama 4 Scout 109B-A17B Won't fit 5.39 Runs comfortably 100
Qwen3 8B Runs comfortably 108 Runs comfortably 230
Qwen3 14B Runs comfortably 63.5 Runs comfortably 136
Qwen3 32B Fits, but tight 29.5 Runs comfortably 63.5
Qwen3 4B Runs comfortably 196 Runs comfortably 407
Qwen3 30B-A3B Runs comfortably 117 Runs comfortably 163
Qwen3 235B-A22B Won't fit 3.36 Won't fit 6.02
Qwen2.5-Coder 32B Fits, but tight 29.5 Runs comfortably 63.5
Qwen2.5 7B Runs comfortably 125 Runs comfortably 265
Qwen2.5 72B Won't fit 1.59 Runs comfortably 29.6
Gemma 3 4B Runs comfortably 209 Runs comfortably 434
Gemma 3 12B Runs comfortably 76.1 Runs comfortably 162

Specifications

RTX 3090A100 80GB
Memory24 GB80 GB
Bandwidth936 GB/s2039 GB/s
FP16 compute71 TFLOPS312 TFLOPS
Launch price$1,499$15,000
ArchitectureAmpereAmpere