Unverified50% confidenceCautionExact time
RTX 3090热设计功耗高达350W，需确认扩展坞电源适配器通常需要650W以上稳定供电
1
Sources
50%
Confidence
Long-term
Relevance
7/14/2026
First Seen
Sources
Related Claims
Unverified电源功率选择应按显卡TDP+150W预留，如RTX 4070Ti（285W）建议750W金牌电源，RTX 4080/4090建议850W-1000W，避免瞬时功耗触发OCP保护重启81% similarUnverified电源额定功率应为整机峰值功耗的1.3-1.5倍留余量，RTX 4070Ti/4080需650W-750W金牌电源，RTX 4090需850W-1000W并优先ATX3.0原生12VHPWR接口80% similarUnverified电源瓦数计算：显卡TDP + CPU TDP后预留50%冗余，如RTX 4070(200W)+i5(125W)约325W，选650W金牌电源留足升级空间78% similarUnverified游戏主机的电源功率应≥显卡TDP+CPU TDP+150W冗余，例如RTX 4070(200W)+i5-13600K(125W)建议配650W金牌电源，RTX 4080及以上建议850W78% similarUnverified电源功率需按显卡留足余量：RTX 4070级别建议650W以上，4080/4090建议850W以上并选ATX 3.0/原生12VHPWR接口，避免转接线烧毁风险77% similar
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