Graphics card image quality optimization settings, Nvidia graphics card AMD graphics card image quality optimization

Which one has better picture quality, N card or A card? Rumors that A card has good picture quality and N card has fast internet speed have been widely circulated, but in fact no one can tell the reason why. However, whether it is an N-card, A-card or even an I-card, if the driver settings are improper, the color will indeed be divided into good and bad! Today, the editor will tell you about some key color settings of the graphics card driver!

Color dynamic range setting

This is a problem that old users will definitely pay attention to, and it is also the main reason for the perception that the color of N card is not as good as that of A card. For a certain period of time, for the sake of compatibility, NVIDA set the color dynamic range in the driver to 16-235 by default, while the A card was the complete 0-255.

Compared with the color range of 0-255, 16-235 is obviously gray. The reason why the color of A card is more transparent and deeper than that of N card is often due to this situation. The solution is also very simple. Just set the color dynamic range of the N card to 0-255 in the driver. Now the new driver of the N card also uses the color dynamic range of 0-255 by default, which is no different from the A card. Just set the N card option to "Complete".

Intel graphics driver settings: I card can find the "Input Range" in the "Video" option of the driver panel, set it to "Full", and get Best results.

Color pixel format and color gamut settings

This is a setting item that is easily overlooked by ordinary users. If you pay attention, you should notice that the graphics card will output different color pixel formats, such as "RGB 4:4:4" or "YUV/YCbCr 4:2:2" and so on. This is actually due to the different color coding used.

Generally speaking, computer monitors use the color gamut of the RGB color coding system, such as sRGB, Adobe RGB, etc. This type of color gamut uses the three primary colors of red, green and blue to encode colors; but for the sake of compatibility, The default color gamut output by the graphics card driver is most likely YUV encoding, which uses brightness, hue, and saturation to define colors.

YUV can be converted to RGB through formula calculation, but the conversion will involve accuracy issues. If the graphics card driver chooses to output YUV signals to the monitor, the image quality will naturally decline compared to outputting RGB.

Therefore, changing the corresponding option in the graphics card driver to output RGB 4:4:4 will result in better colors. Both N and A cards can be set in the driver, as detailed below.

N card output color format setting

A card output color setting

And I The card uses RGB output by default and cannot be set in the driver panel.

Color depth setting

Currently, both N and A cards can output 10-bit color depth in the DirectX environment. The biggest advantage of 10-bit color depth compared to 8-bit and 6-bit is that the gray scale is richer. 10-bit can provide 1024 levels of color, while 8-bit only has 256 levels, and 6-bit has only 64 levels. More color levels can make color transitions smoother and avoid streaks when displaying gradients.

Currently, more and more monitors support 10-bit color depth. Whether it is natively supported or dithered, the effect is better than the currently popular 8-bit color depth. Even if your monitor does not support 10-bit color depth, you can still enjoy the benefits of 10-bit when playing 10-bit videos. Videos are often based on the YUV color gamut, while monitors use the RGB color gamut. Playing videos on a PC means that the color must undergo YUV→RGB color gamut conversion. 10-bit color depth can provide higher conversion accuracy, and the color display will be more precise. accurate.

Both N card and A card can enable 10-bit color depth directly through the driver. The specific location is as follows.

N card enables 10-bit color depth

A card enables 10-bit color depth

The I card does not provide this option in the driver panel. If the I-card wants to use 10-bit color depth, you need to turn on HDR in the settings options of Win10. Only then will the I-card output 10-bit. However, when displaying non-HDR content, the colors will be very strange. It is not recommended to turn on HDR for 10-bit.

I card can only enable 10-bit through system HDR

N card provides 10-bit color depth in OpenGL environment after 431.70 driver Output can support 10-bit color depth in professional software, which means that the N card can also support 10-bit in professional graphics software such as PS, PR, and C4D. This is an advantage that A cards do not have. From this aspect, the color of N card is better than that of A card.

最后，值得注意的是，如果你使用的是4K分辨率屏幕，那么仅能通过DP接口输出10-bit RGB 4:4:4 10-bit/60帧画面，HDMI目前并没有足够的带宽，因此大家尽量使用DP接口吧。

显卡驱动之所以不以最佳画质输出，很多时候是由于考虑到兼容问题，或者存在历史遗留问题。如果你想要更好的画质，不妨尝试一下这些设置吧。

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