RTX 4090 vs RTX 3090 - GPU Benchmark Comparison

Direct performance comparison between the RTX 4090 and RTX 3090 across 20 standardized AI benchmarks collected from our production fleet. Testing shows the RTX 4090 winning 20 out of 20 benchmarks (100% win rate), while the RTX 3090 wins 0 tests. All 20 benchmark results are automatically gathered from active rental servers, providing real-world performance data rather than synthetic testing.

LLM Inference Performance: RTX 4090 21% faster

In language model inference testing across 8 different models, the RTX 4090 is 21% faster than the RTX 3090 on average. For gpt-oss:20b inference, the RTX 4090 achieves 181 tokens/s compared to RTX 3090's 144 tokens/s, making the RTX 4090 significantly faster with a 26% advantage. Overall, the RTX 4090 wins 8 out of 8 LLM tests with an average 21% performance difference, making it the stronger choice for transformer model inference workloads.

Image Generation Performance: RTX 4090 43% faster

Evaluating AI image generation across 12 different Stable Diffusion models, the RTX 4090 is 43% faster than the RTX 3090 in this category. When testing flux-schnell, the RTX 4090 completes generations at 13 s/image compared to RTX 3090's 21 s/image, making the RTX 4090 substantially faster with a 65% advantage. Across all 12 image generation benchmarks, the RTX 4090 wins 12 tests with an average 43% performance difference, establishing it as the preferred GPU for Stable Diffusion, SDXL, and Flux deployments.

About These Benchmarks of RTX 4090 vs RTX 3090

Our benchmarks are collected automatically from servers having gpus of type RTX 4090 and RTX 3090 in our fleet using standardized test suites:

LLM Inference (Ollama & VLLM): Measures tokens per second of RTX 4090 compared to RTX 3090 for LLM inference using various models (Llama, Qwen, etc.) on both Ollama and VLLM with FP8 quantization
Image Generation: Measures images per minute and seconds per image for AI image generation on the RTX 4090 compared to RTX 3090
CPU: Single-core and multi-core operations per second representing GPU Servers you can rent with RTX 4090 or RTX 3090
NVMe: Read and write speeds in MB/s for storage performance on GPU Servers typically equipped with RTX 4090 or RTX 3090

Note: RTX 4090 and RTX 3090 AI Benchmark Results may vary based on system load, configuration, and specific hardware revisions. These benchmarks represent median values from multiple test runs of RTX 4090 and RTX 3090.