Tested RTX 5090 vs 4090 GPUs for AI: You Won’t Believe the Winner!
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Performance comparison between NVIDIA RTX 5090 and RTX 4090 GPUs reveals surprising results for AI workloads. Testing across three scenarios (text summarization with T5-Large, DistilBERT fine-tuning, and Stable Diffusion image generation), the older RTX 4090 consistently outperformed the newer RTX 5090 by significant margins. The performance gap stems from immature software library optimization for the 5090's new Blackwell architecture, CUDA compatibility issues, and NVIDIA's gaming-focused optimization priorities. For current AI development involving LLM inference, fine-tuning, and generative tasks, the RTX 4090 remains the superior choice due to mature library support and proven stability.
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