RTX 3090 vs RTX 4090 - GPU Benchmark Comparison

Direct performance comparison between the RTX 3090 and RTX 4090 across 20 standardized AI benchmarks collected from our production fleet. Testing shows the RTX 3090 winning 0 out of 20 benchmarks (0% win rate), while the RTX 4090 wins 20 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 3090 17% slower

In language model inference testing across 8 different models, the RTX 3090 is 17% slower than the RTX 4090 on average. For gpt-oss:20b inference, the RTX 3090 reaches 144 tokens/s while the RTX 4090 achieves 181 tokens/s, making the RTX 3090 significantly slower with a 20% deficit. Overall, the RTX 3090 wins 0 out of 8 LLM tests with an average 17% performance difference, making the RTX 4090 the better option for LLM inference tasks.

Image Generation Performance: RTX 3090 28% slower

Evaluating AI image generation across 12 different Stable Diffusion models, the RTX 3090 is 28% slower than the RTX 4090 in this category. When testing flux-schnell, the RTX 3090 completes generations at 21 s/image while the RTX 4090 achieves 13 s/image, making the RTX 3090 significantly slower with a 39% deficit. Across all 12 image generation benchmarks, the RTX 3090 wins 0 tests with an average 28% performance difference, making the RTX 4090 the better choice for Stable Diffusion, SDXL, and Flux workloads.

About These Benchmarks of RTX 3090 vs RTX 4090

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

LLM Inference (Ollama & VLLM): Measures tokens per second of RTX 3090 compared to RTX 4090 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 3090 compared to RTX 4090
CPU: Single-core and multi-core operations per second representing GPU Servers you can rent with RTX 3090 or RTX 4090
NVMe: Read and write speeds in MB/s for storage performance on GPU Servers typically equipped with RTX 3090 or RTX 4090

Note: RTX 3090 and RTX 4090 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 3090 and RTX 4090.