I'd recommend saving a 100 more $ and getting a 970 if that is not a option get either the 760 or the r9 280x
970
http://www.amazon.com/ASUS-STRIX-GTX970-DC20C-4GD5-Graphics-Cards/dp/B00NJ9BJ8G/ref=sr_1_5?s=pc&ie=UTF8&qid=1417312818&sr=1-5&keywords=970
760
http://www.amazon.com/EVGA-SuperClocked-Dual-Link-Graphics-02G-P4-2765-KR/dp/B00DHW4HXY/ref=sr_1_1?s=electronics&ie=UTF8&qid=1417312849&sr=1-1&keywords=gtx+760
or
http://www.amazon.com/GTX760-DC2OC-2GD5-GeForce-256-bit-PCI-Express-OC-selected/dp/B00DBPKEOI/ref=sr_1_2?s=electronics&ie=UTF8&qid=1417312849&sr=1-2&keywords=gtx+760
r9 280x
http://www.amazon.com/XFX-RADEON-1000MHz-Graphics-R9-280X-TDFD/dp/B00FSC5N66/ref=sr_1_1?s=electronics&ie=UTF8&qid=1417312903&sr=1-1&keywords=r9+280x