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Unverified88% confidenceDecision RuleTime unknown

做AI训练/推理或跑本地大模型时，显存容量是硬门槛，7B模型需要至少8G，13B以上需要16G-24G，此时应优先选大显存而非高游戏性能

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UnverifiedAI大模型本地训练/微调场景：优先看显存总量与带宽，24G可微调7B级模型，48G支持13B级LoRA微调，70B级推理需多卡显存合计80G以上84% similar Unverified训练大模型（>13B参数）时显存容量优先级高于算力，单卡显存<40GB无法有效微调13B模型（即使用LoRA也需24GB+），全参数训练70B模型需至少8×80GB卡82% similar UnverifiedLLM推理/训练选卡看显存优先于算力：7B模型微调至少需24GB显存（RTX 4090/A5000），13B需A100 40GB，70B全参数训练需A100 80GB×4或H100集群75% similar Unverified显卡显存容量比核心型号更影响使用寿命：1080P游戏8G够用，2K建议12G，4K或AI绘图/大模型本地推理建议16G以上，显存不足会直接卡顿或爆显存73% similar Unverified对于多模态Agent需要同时驻留多个模型的场景，24GB显存几乎是当前实用门槛，32GB以上才能实现较为流畅的多模块并行71% similar

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