Change Display Scaling
The display scaling controls appear on the Adjust Desktop Size and Position page when you click the icon that represents your flat panel display or non-HD digital display connected to the HDMI, DisplayPort, or DVI connector.
Use these controls to change how lower resolution images are scaled to fit your display.
Use NVIDIA scaling: Your desktop is stretched to fit your entire display screen, even if the aspect ratio is not the same. For example, if your flat panel has a maximum resolution of 1400×1050, an image with a resolution of 1024×768 will be scaled to appear on the screen at a 1400×1050 resolution. Use this setting if you want to make your desktop appear as large as possible yet still fit your screen.
Use NVIDIA scaling with fixed aspect ratio: The desktop is stretched as much as possible to fit your display screen while still maintaining the aspect ratio of the image. For example, if your flat panel has a maximum resolution of 1680 x 1050, an image with a resolution of 1024 x 768 will be scaled to appear on the screen at a 1400 x 1050 resolution with black borders. You may want to use this setting if your desktop looks distorted.
Use my display’s built-in scaling: Your display scales the unscaled image that your NVIDIA GPU-based graphics card generates. Use this setting if you prefer the visual quality of your display’s built-in scaling.
Do not scale: Prevents your flat panel display from scaling. This display image remains its original size and centred on your screen resulting in a small though crisp image. A black border may appear around the display image. You may want to use this setting if your desktop appears blurry when you use any of the other scaling settings.