Samsung PN51D490A1DXZA E-Manual page 167

Support resolution (16:9 only)
N
Resolution Frequency (Hz)
1280 x 720p 50 / 60 Hz
1920 x 1080i 50 / 60 Hz.
1920 x 1080p 24 / 30 / 50 / 60 Hz
Resolution supported for HDMI PC mode
◀ ▶
The optimal resolution for the HDMI PC mode is 1920 x 1080. If the input
resolution is not 1920 x 1080, the TV may not display images properly in 3D
display or full screen mode.
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