ABSOLUTE GAMING BEAST

Nvidia's geforce gtx 680 is by far the most powerful and energy efficient graphics card ever built with a little add on features which you are already aware of  like gpu boost 2.0 adaptive v sync etc as nvidia has already introduced these features in their previous models on, pc, notebook, and at mac book as well
1- It is based on kepler architecture which is  more advanced than the gcn or (graphics core next )
architecture since it gives more performance at same power
2- It comes with 1536 cuda cores with a base clock speed upto 1006 mhz                                                                                                                 boost clock speed upto 1058 mhz
                                                         max resolution -4096x 2160
                                                         bandwith 19 gb/s
 3- It comes with a memory inter face of 256 bit gddr5
                                           power consumption 550w
4- Now to consider an amd card of 2k bucks more  budget that is at most 19,000  amd hd 787O                                                                                                                  1- clock speed -1056
                                                                                                 2- max resolution 2560x1600
                                                                                                3- 256 bit gddr5
                                                                                                 4   16gb/s
                                                                                               5 power consumption 630 w                                                        SOOOOOOOOOO GO FOR IT GUYS U WONT GET A BETTER BEAST AT 16K BUCKS