background introduction

DSR, the full name of Dynamic Super Resolution, Chinese for dynamic super resolution, also known as “custom resolution”

This technology only supports N-card independent display models (for example, dual-graphics notebooks may not support it, and independent display direct connection is not supported, but single-GPU ones are supported)

The core function of this technology is similar to the overclocking gameplay. In a low-resolution display environment, the resolution limit is “super”, or modified, and unlocked to a higher resolution.

DSR renders games at higher, more detailed resolutions and then intelligently scales the images to the monitor’s native resolution, giving gamers 4K (3840×2160) quality graphics on any screen.

Enthusiasts refer to this process as downsampling or supersampling. DSR greatly improves upon this process by applying high-quality filters designed specifically for the task.

For example, the 1080P screen exceeds 2K resolution, and the 2K screen exceeds 4K resolution.

Settings and Examples

This setting can be adjusted in DSR-factor, DSR-smoothness in NVIDIA Control Panel-3D Settings-Manage 3D Settings

Currently, there are two types of old zoom and DL zoom. DL claims to have the same quality and double the efficiency.

In the case where I use 2K standard resolution + RTX4080, DL can have 1.78X and 2.25X (2K super 4K)

After starting 2.25X DL, you can adjust the display resolution to 4K in games, desktops, etc., but because super-resolution will cause text icons, etc. to become smaller, you may need to adjust it in the display settings of the desktop

Display Settings-Scale and Layout-Change the size of items such as text applications. Generally, a magnification of 150%~200% may be required, depending on the size of your display

The role of super-resolution

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Games and Movies

When the game renders the picture, an effect adjustment will be made according to your resolution. If the resolution is lower, the details may be lost, and if the resolution is higher, more details may be displayed.

According to the official website of NVIDIA:

In the opening scene of Dark Souls II, the player finds himself surrounded by swaying grass. At 1920×1080, the grass flickers violently when swaying and appears to be lacking in detail, as highlighted in our screenshot: Examining the pixels in detail reveals that the grass appears this way because the 1920×1080 resolution lacks Sufficient number of samples to reveal fine grass details: At 3840×2160 (4K), the number of samples is multiplied by 4, enabling the game to capture and render more detail in each blade of grass. Finally, DSR applies a custom 13th-order Gaussian filter when downscaling the 4K image to 1920×1080 for display on a monitor: The DSR process significantly improves image quality and by adding a 13th-order Gaussian filter, traditional downsampling goes The aliasing artifacts are greatly reduced or completely eliminated, further improving image quality. Grass is a valid example to demonstrate sample points, but don’t make the mistake of thinking that grass is the only beneficiary of DSR’s capabilities. In almost all games, DSR improves the quality of textures, shadows, effects, anti-aliasing, ambient occlusion shadows, geometry detail, and model detail to some degree.

The same is true for film and television and games, and more subtle details may be displayed at 4K resolution.

to record

If your screen resolution does not reach high resolution, then most recording software may not support advanced resolutions. For example, if you use a 2K screen, when using OBS, the output video resolution will not be available in 4K, but use DSR technology After exceeding 4K, even if your experience is the same, the recording software can achieve 4K resolution recording. If you need to create 4K and other high-resolution videos, you can achieve this in a simple way without changing the physical display 4K video recording.

office

Higher resolution can achieve more display space without directly resizing. If your display is a large screen but the resolution is lower, the effect is more obvious.

Negative impact

Increasing the display resolution will greatly increase the GPU load, thereby increasing GPU power consumption and reducing the game frame rate. Under the current environment, it is difficult for graphics cards below RTX4080 to support 4K high-level image output.

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