Samsung UHD supported resolution

ubuntu@ubuntu:~$ xrandr -q
Screen 0: minimum 320 x 200, current 2560 x 1440, maximum 8192 x 8192
DisplayPort-0 connected primary 2560x1440+0+0 (normal left inverted right x axis y axis) 607mm x 345mm
   2560x1440     59.95*
   1920x1080     60.00    59.94
   1680x1050     59.95
   1600x900      60.00
   1280x1024     75.02    60.02
   1440x900      59.89
   1280x800      59.81
   1152x864      75.00
   1280x720      60.00    59.94
   1024x768      75.03    70.07    60.00
   832x624       74.55
   800x600       72.19    75.00    60.32    56.25
   640x480       75.00    72.81    66.67    60.00    59.94
   720x400       70.08
HDMI-0 connected (normal left inverted right x axis y axis)
   1920x1080     60.00    50.00    59.94    30.00    24.00    29.97    23.98
   1680x1050     59.88
   1600x900      60.00
   1280x1024     75.02    60.02
   1440x900      59.90
   1280x800      59.91
   1152x864      75.00
   1280x720      60.00    50.00    59.94
   1024x768      75.03    70.07    60.00
   832x624       74.55
   800x600       72.19    75.00    60.32    56.25
   720x576       50.00
   720x480       60.00    59.94
   640x480       75.00    72.81    66.67    60.00    59.94
   720x400       70.08
DVI-0 disconnected (normal left inverted right x axis y axis)
DVI-1 disconnected (normal left inverted right x axis y axis)
ubuntu@ubuntu:~$ xvidtune -show
"2560x1440"   241.50   2560 2608 2640 2720   1440 1443 1448 1481 +hsync -vsync