双显卡交火,性能提升多少?请详细些双敏无极HD5750 DDR5 大牛版 ¥799 x2= ¥1598双敏无极HD5850 DDR5 黄金版 ¥2299差价 ¥701选哪个好?
参考资料:http://www.pcpop.com/doc/0/452/452911_7.shtml