RTX 4090 vs RTX 4090 Pro - GPU Benchmark Comparison

Direct performance comparison between the RTX 4090 and RTX 4090 Pro across 21 standardized AI benchmarks collected from our production fleet. Testing shows the RTX 4090 winning 8 out of 21 benchmarks (38% win rate), while the RTX 4090 Pro wins 13 tests. All 21 benchmark results are automatically gathered from active rental servers, providing real-world performance data rather than synthetic testing.

LLM Inference Performance: RTX 4090 roughly equal performance

In language model inference testing across 9 different models, the RTX 4090 performs nearly identically to the RTX 4090 Pro, with less than 10% average difference. For gpt-oss:20b inference, the RTX 4090 achieves 181 tokens/s compared to RTX 4090 Pro's 179 tokens/s, making the RTX 4090 marginally faster with a 1% advantage. Overall, the RTX 4090 wins 4 out of 9 LLM tests with an average 1% performance difference, making the RTX 4090 Pro the better option for LLM inference tasks.

Image Generation Performance: RTX 4090 39% slower

Evaluating AI image generation across 12 different Stable Diffusion models, the RTX 4090 is 39% slower than the RTX 4090 Pro in this category. When testing sd3.5-medium, the RTX 4090 completes generations at 25 s/image while the RTX 4090 Pro achieves 6.1 s/image, making the RTX 4090 substantially slower with a 75% deficit. Across all 12 image generation benchmarks, the RTX 4090 wins 4 tests with an average 39% performance difference, making the RTX 4090 Pro the better choice for Stable Diffusion, SDXL, and Flux workloads.

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