If it does not totally break your budget, for only 40 more you can get this one.
http://www.ebuyer.com/510172-gigabyte-gtx-770-2gb-gddr5-7000mhz-dual-dvi-hdmi-displayport-pci-e-graphics-card-gv-n770oc-2gd
Also, you do not need more than 2GB of memory on your video card unless you plan on running 3+ multiple monitors or a resolution higher than 1920x1080. Many hardware review sites have tested this and the difference on current games for a single screen is basically non-existent when increasing the frame buffer over 2GB