Give them two scores based on a scale of 1-10.
One for performance.
Other price performance ratio.
Zotac GTX 660 2 GB : http://www.flipkart.com/zotac-nvidia-geforce-gtx660-2gb-2-gb-ddr5-graphics-card/p/itmddmmkmjdcbmqz?pid=GRCDDMMGFJYNGYGN&icmpid=reco_pp_historyFooter_graphics_card_3
Palit GTX 660 2 GB : http://www.flipkart.com/palit-nvidia-geforce-gtx-660-2-gb-gddr5-graphics-card/p/itmdh8dyd2gdscz7?pid=GRCDH8CZRFZBAC8P&otracker=from-search&srno=t_2&query=gtx+660+palit&ref=1002536b-e95a-447e-b36e-453a6aad3ca4
Sapphire HD 7850 2 GB : http://www.flipkart.com/sapphire-radeon-hd-7850-2gb-gddr5-graphics-card/p/itmdh75uazzzgsdd?pid=GRCDH72GTJTFQQZ5&otracker=from-search&srno=t_4&query=hd+7850&ref=854d7a7d-5cb4-42c4-b180-13ba6743f071
One for performance.
Other price performance ratio.
Zotac GTX 660 2 GB : http://www.flipkart.com/zotac-nvidia-geforce-gtx660-2gb-2-gb-ddr5-graphics-card/p/itmddmmkmjdcbmqz?pid=GRCDDMMGFJYNGYGN&icmpid=reco_pp_historyFooter_graphics_card_3
Palit GTX 660 2 GB : http://www.flipkart.com/palit-nvidia-geforce-gtx-660-2-gb-gddr5-graphics-card/p/itmdh8dyd2gdscz7?pid=GRCDH8CZRFZBAC8P&otracker=from-search&srno=t_2&query=gtx+660+palit&ref=1002536b-e95a-447e-b36e-453a6aad3ca4
Sapphire HD 7850 2 GB : http://www.flipkart.com/sapphire-radeon-hd-7850-2gb-gddr5-graphics-card/p/itmdh75uazzzgsdd?pid=GRCDH72GTJTFQQZ5&otracker=from-search&srno=t_4&query=hd+7850&ref=854d7a7d-5cb4-42c4-b180-13ba6743f071