To apply Discrete Monitor Timing standards (DMT) to your display
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From the NVIDIA Control Panel navigation tree pane, under Display, click Change resolution. 
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Click the image that represents the display you want to affect. 
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Click Customise, then from the Customise dialogue box, click Create Custom Resolutions. 
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Click the Timing Standard list arrow and select GTF. 
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DMT is a set of pre-defined VESA timings. VESA updates this standard every year. If DMT timing is available for a specific mode, the NVIDIA display driver normally selects it instead of General Timing Formula (GTF). 
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Click Test, then if the test passes and you want to save the new mode, click Save. 
Related Topics
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Create Custom Resolutions Dialogue Box