A卡:HD6750 6770 6850 (6750 6770推荐蓝宝白金版,6850强烈推荐微星6850hawk)N卡:GTS450 GTX550Ti GTX460(450 550Ti影驰吧,460映泰GT460毁灭者,华硕的也行)低了用集显算了,U换i3 2105,最高带到6850 460