I have chosen two graphic cards but I am confused.
http://www.flipkart.com/zotac-nvidia-geforce-gtx-760-2gb-graphics-card/p/itmdn3h3kycjgx3g?pid=GRCDN3GPKAGUESMH&otracker=from-search&srno=t_2&query=graphics+card&ref=7664182a-ac82-4114-ba60-71f87a104d7a
and
http://www.flipkart.com/msi-amd-r9-270x-hawk-2-gb-gddr5-graphics-card/p/itmdpvgkcm6mzhuz?pid=GRCDPVGB4KZUZGFN&
http://www.flipkart.com/zotac-nvidia-geforce-gtx-760-2gb-graphics-card/p/itmdn3h3kycjgx3g?pid=GRCDN3GPKAGUESMH&otracker=from-search&srno=t_2&query=graphics+card&ref=7664182a-ac82-4114-ba60-71f87a104d7a
and
http://www.flipkart.com/msi-amd-r9-270x-hawk-2-gb-gddr5-graphics-card/p/itmdpvgkcm6mzhuz?pid=GRCDPVGB4KZUZGFN&