How to judge the performance of computer graphics card? What are the main items? Please explain the classification in detail

1 mainly depends on several parameters of the graphics card: 1 display chip: graphics processing chip, which is what we often call GPU(Graphic Processing Unit). It is the "brain" of the graphics card, which is responsible for most of the calculation work. In the whole graphics card, the GPU is responsible for processing the data sent by the computer and finally displaying the results on the display. Various 3D special effects supported by graphics cards are determined by the performance of GPU, which is equivalent to the role of CPU in a computer. The grade and basic performance of a graphics card are roughly determined by which display chip is used, and it is also the basis for distinguishing 2D display cards from 3D display cards. 2D display chips mainly rely on the processing power of CPU when processing 3D images and special effects, which is called "soft acceleration". The 3D display chip concentrates 3D images and special effects processing functions in the display chip, which is the so-called "hardware acceleration" function. At present, most graphics cards on the market use graphics processing chips of nVIDIA and ATI, such as NVIDIA FX52, FX57, RADEON 98 and so on. However, although the display chip determines the grade and basic performance of the graphics card, only with appropriate video memory can the performance of the graphics card be fully displayed.

2 types of memory (mainly memory capacity, memory speed, memory bandwidth and memory bit width). The bit width of video memory is an important factor to determine the bandwidth of video memory, which is closely related to the performance of graphics card. We often talk about a graphics card with a specification of 128 MB and 128bit, of which 128 bit means that the memory bit of the graphics card is wide.

3RAMDAC (digital-to-analog converter) is used to convert the digital signals in the video memory into analog signals that can be used for display. The speed of RAMDAC has a great influence on the images seen on the display. This is mainly because the refresh rate of the image depends on the analog information received by the display, which is provided by RAMDAC. RAMDAC conversion rate determines the refresh rate.

4 working frequency and limit frequency of graphics card (favorite of overclocking players)

5 work.