New Radeon R7 One Display Doesn't Fill Screen

l2ichlvl

Distinguished
Jul 31, 2011
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I just installed a new AMD Radeon R7 260x. I have two Asus VK246 monitors; one is connected via HDMI, the other is DVI. The DVI screen looks fine and is extended across the whole screen. The HDMI display looks less sharp and is not extended across the whole screen (black box around display).

I installed the drivers for both. Oddly, within the AMD Catalyst Control Center, that second monitor doesn't have the 1920 x 1080 option like the DVI monitor does - it only goes up to 1680 x 1050 which does extend the picture to the full display. Not too sure where to go from here so any help is greatly appreciated.
Thank you.