Which one is better Asus AMD/ATI HD 6670 2 GB DDR3 Graphics Card: http://www.snapdeal.com/product/asus-hd66702gd3-ati-pci-express/1387528#prdsc or PowerColor AMD/ATI Radeon HD6670 2 GB DDR3 Graphics Card: http://www.flipkart.com/powercolor-amd-ati-radeon-hd6670-2-gb-ddr3-graphics-card/p/itmd5ynexfx6dkyy?pid=GRCD5YNDKMBHZ2AX&icmpid=reco_pp_hSame_graphics_card_4