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by ethan_smith
350 days ago
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As a rule of thumb, each billion parameters requires about 4GB of VRAM in FP16 (2 bytes per parameter), so a 7B model needs ~28GB, 70B needs ~280GB, while the 405B models need ~1.6TB of VRAM - though quantization can reduce this by 2-4x (4-bit models use only ~0.5GB per billion parameters). |
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