Which GPU Do You Need for AI? A Practical VRAM Guide

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Learn how to choose the right GPU for LLMs, RAG, image and video generation by comparing VRAM requirements, performance and cost.
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The right GPU depends on the complete workload—not just the model name. VRAM requirements change with model size, precision, context length, concurrency, resolution and workflow complexity. Estimate the required memory, compare suitable GPUs by speed and price, and test with realistic inputs before committing.