Head to head

RTX 5080 vs NVIDIA DGX Spark (GB10)

The NVIDIA DGX Spark (GB10) holds more — 128 GB against 16 GB — which decides what you can load at all. The RTX 5080 has more bandwidth at 960 GB/s, which decides how fast tokens come out once a model fits.

Model (Q4_K_M, 8K)RTX 5080tok/sNVIDIA DGX Spark (GB10)tok/s
Llama 3.1 8B Runs comfortably 121 Runs comfortably 35.1
Llama 3.1 70B Won't fit 1.35 Runs comfortably 4.37
Llama 3.2 3B Runs comfortably 266 Runs comfortably 78.1
Llama 3.2 1B Runs comfortably 700 Runs comfortably 209
Llama 4 Scout 109B-A17B Won't fit 4.91 Runs comfortably 14.8
Qwen3 8B Runs comfortably 117 Runs comfortably 33.9
Qwen3 14B Runs comfortably 68.7 Runs comfortably 19.8
Qwen3 32B Won't fit 4.98 Runs comfortably 9.17
Qwen3 4B Runs comfortably 212 Runs comfortably 62.2
Qwen3 30B-A3B Won't fit 46.2 Runs comfortably 53.5
Qwen3 235B-A22B Won't fit 3.36 Won't fit 6.20
Qwen2.5-Coder 32B Won't fit 4.98 Runs comfortably 9.17
Qwen2.5 7B Runs comfortably 135 Runs comfortably 38.9
Qwen2.5 72B Won't fit 1.31 Runs comfortably 4.24
Gemma 3 4B Runs comfortably 226 Runs comfortably 66.4
Gemma 3 12B Runs comfortably 82.3 Runs comfortably 23.8

Specifications

RTX 5080NVIDIA DGX Spark (GB10)
Memory16 GB128 GB
Bandwidth960 GB/s273 GB/s
FP16 compute112 TFLOPS125 TFLOPS
Launch price$999$3,999
ArchitectureBlackwellBlackwell