Can you tell me about the performance index of the graphics card?

1. Display resolution: refers to the product of horizontal pixels and vertical pixels that make up an image (the image is displayed on the display screen). The higher the display resolution, the more image pixels displayed on the screen, and the clearer the image display. The display resolution is closely related to the monitor and graphics card.

The display resolution is usually expressed as "horizontal points× vertical points", such as 1024×768. Maximum resolution refers to the highest resolution that a graphics card or monitor can display. At the highest resolution, the luminous point of the display corresponds to one pixel. If the set resolution of the display is lower than the highest resolution of the display, the pixel can be composed of multiple light-emitting points.

2. Refresh frequency: refers to the speed at which the image is updated on the screen, that is, the number of times the whole picture is displayed on the screen per second, in Hz. The flicker caused by the refresh frequency above 75Hz is generally not easy to be detected by human eyes, therefore, in order to protect eyes, it is best to adjust the refresh frequency of the display to above 75Hz. However, not all graphics cards can achieve a refresh rate of more than 75Hz at the maximum resolution green (this performance depends on the speed of RAM-DAC on the graphics card), and the display may not meet the requirements because of insufficient bandwidth. Some low-end graphics cards can only set the refresh frequency to 60Hz at high resolution.

Third, the number of color bits: the color of each pixel in the graph is described by a set of binary trees, and the length (number of bits) of this set of binary numbers describing color information is called the number of color bits. The more color bits, the richer the color of the displayed graphics. Usually the standard VGA display mode is 8-bit display mode, that is, 256 colors can be displayed in this mode; The enhanced color (16 bit) can display 65536 colors, also called 64K colors; 24-bit true color can display16.77 million colors, also called 16M color. In this mode, you can see that there is no difference between the color of a true color image and a high-definition photo. There are 32 others, 36 others and 42 others.

4. Memory capacity and existing bit width: The higher the resolution supported by the graphics card, the more memory needs to be installed; The memory width of graphics card directly affects the performance of graphics card. At present, the mainstream graphics cards on the market are basically configured with 128-bit memory width and 128M/256M memory capacity. The price of high-end graphics cards with 256-bit memory width and even professional graphics cards with 5 12-bit memory width has doubled. There is also the core bandwidth, the mainstream is basically 256-bit core bandwidth, and the main graphics card can reach 5 12 bit bandwidth.

Fifth, the frequency of the graphics card: including the core frequency and the memory frequency. What we usually call graphics card overclocking means that only these two frequencies are based on standards, so that graphics cards can get better performance and faster running speed; The frequency increase of video memory is also related to another index of video memory: the reflection speed of video memory, which we often say is a few nanoseconds. The smaller the number, the better. The smaller the number, the larger the frequency increasing space of the memory.

6. Memory type: The common memory types of graphics cards are SDR, GDDR, GDDR2, GDDR3, and the upcoming fourth-generation DDR memory. Now the third generation is the best memory, of course, before SDR.

I'm old, so I don't need to study those things now.

7. Graphics card rendering pipeline: This determines the rendering speed of the graphics card when playing 3D games. When doing 3D drawing and 3D rendering, the more rendering pipelines, the less time the graphics card will work, and then the faster it will be. There is also a related indicator: vertex coloring engine: the more these two items, the better.

All right, that's it. I didn't check the information either, so I made up so much for everyone to laugh at, hehe ~ ~ ~