r9280X,r9 280x和r9 380

r9 280x和r9 380x哪个好?r9 380x的性能接近970吗?
xfx讯景r9-280x 3g黑狼图赏
微星r9 280x gaming显卡 开箱及拆解简评
迪兰恒进r9280x 384bit发烧友显卡3g ddr5显存2048流处理器pci-e
微星r9 280x gaming 3g