似乎问题不大。XPS 8900 PSU可以支持225Watt的显卡。GTX 1080似乎只要180Watt Advanced graphics and sound High performance demands high power. That's why every XPS 8900 is equipped with a 460 watt power supply and supports graphics cards demanding up to 225 watts of total power. http://www.dell.com/ae/business/p/xps-8900-desktop/pd In fact, the GeForce GTX 1080 is so efficient that it requires a single power connector and will draw at most 180W of power. http://www.ubergizmo.com/articles/geforce-gtx-1080-speed-price/