RTX 4090 Pro vs A100 - GPU Benchmark Comparison

Direct performance comparison between the RTX 4090 Pro and A100 across 20 standardized AI benchmarks collected from our production fleet. Testing shows the RTX 4090 Pro winning 11 out of 20 benchmarks (55% win rate), while the A100 wins 9 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 Pro 15% faster

In language model inference testing across 8 different models, the RTX 4090 Pro is 15% faster than the A100 on average. For gpt-oss:20b inference, the RTX 4090 Pro achieves 179 tokens/s compared to A100's 149 tokens/s, making the RTX 4090 Pro significantly faster with a 20% advantage. Overall, the RTX 4090 Pro wins 7 out of 8 LLM tests with an average 18% performance difference, making it the stronger choice for transformer model inference workloads.

Image Generation Performance: RTX 4090 Pro 142% slower

Evaluating AI image generation across 12 different Stable Diffusion models, the RTX 4090 Pro is 142% slower than the A100 in this category. When testing sd3.5-medium, the RTX 4090 Pro completes generations at 9.8 images/min compared to A100's 8.9 images/min, making the RTX 4090 Pro moderately faster with a 11% advantage. Across all 12 image generation benchmarks, the RTX 4090 Pro wins 4 tests with an average 142% performance difference, making the A100 the better choice for Stable Diffusion, SDXL, and Flux workloads.

About These Benchmarks of RTX 4090 Pro vs A100

Our benchmarks are collected automatically from servers having gpus of type RTX 4090 Pro and A100 in our fleet using standardized test suites:

LLM Inference (Ollama & VLLM): Measures tokens per second of RTX 4090 Pro compared to A100 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 Pro compared to A100
CPU: Single-core and multi-core operations per second representing GPU Servers you can rent with RTX 4090 Pro or A100
NVMe: Read and write speeds in MB/s for storage performance on GPU Servers typically equipped with RTX 4090 Pro or A100

Note: RTX 4090 Pro and A100 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 Pro and A100.