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Windows starts in 1920x1080, the Display Control panel applet shows that as maximum resolution.

If I define a custom resolution of 2560x1440 in the nVidia Control Panel and activate it, the picture is very blurry and the monitors OSD menu claims it is still 1920x1080.

The nVidia release notes list 2048x1536 as the maximum supported standard resolution (I wonder when they'll add 4K modes, they are pretty standard if you ask me). On the other hand the GT 530 home page lists: Maximum Digital Resolution: 2560x1600 So it should work.

The question is: how to set things up to use the monitors native resolution of 2560x1440?

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  • The card is from 2010, while HDMI v1.3 (that introduced support for 2560×1600p/60 Hz) is from 2006, so I doubt a too old version of HDMI is at fault. The HDMI cable came with the monitor so it should be good enough too. – David Balažic Jul 10 '17 at 20:14
  • Did you try a different HDMI (1.3) cable? Perhaps they didn't send a 1.3 with your monitor. Are you running a Dell? Look at this superuser.com/questions/119755/… "There are many posts about limited resolutions on Intel chips." – FredSavage187 Jul 11 '17 at 9:59
  • @FredSavage187 The cable is OK, it works at top resolution with another PC. – David Balažic Jul 11 '17 at 10:05
  • Try using the DVI output on the GPU. The specs say "support for 1080p Blu-Ray discs over HDMI." Under Dual-link DVI support, it says: "Able to drive industry’s largest and highest resolution flat-panel displays up to 2560x1600 and with support for High-bandwidth Digital Content Protection (HDCP). – FredSavage187 Jul 11 '17 at 10:39
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Short: create a custom resolution of 2560x1440 with Timing set to "CVT reduced blank"

Long: In nVidia Control Panel I had to create a custom resolution of 2560x1440 at 60Hz with the Timing option set to "CVT reduced blank" instead of the default "Automatic".

Hints taken from https://www.notebookcheck.net/2560x1440-or-2560x1600-via-HDMI.92840.0.html

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