Don’t buy a secondhand graphics card until you’ve put it through these tests.
GPU memory (VRAM) is the critical limiting factor that determines which AI models you can run, not GPU performance. Total VRAM requirements are typically 1.2-1.5x the model size due to weights, KV ...
RAM vs GPU upgrade guide 2026 explains bottlenecks, DDR5 RAM upgrade vs RTX 50 GPU upgrade for better computer performance ...
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