To apply an existing custom resolution to your display
Note: You must be an advanced user and have knowledge of display timing concepts in order to create custom timings for special displays, such as an HDTV. Creating custom display timings creates new display modes to connect to display devices (such as HDTV) that may not use a standard Windows resolution.
From the NVIDIA Control Panel navigation tree pane, under Display, click Change resolution.
Click the image that represents the display you want to affect.
In the Resolution list box, select the custom resolution that you want to apply, then click Apply.
If the custom resolution is not listed, then add it to the list as follows:
Click Customize, then check the Enable resolutions not exposed by the display check box.
From the list that appears in the Resolutions box, click the check box by the custom resolution you want to add, then click OK.
The custom resolution should now appear in the Resolution list box.
In the Resolution list box, select the custom resolution that you want to apply, then click Apply.