What is a graphics card used for? How do you think about the quality of the graphics card?

Graphics card is the core hardware that determines the performance of a computer game, the importance can be imagined, now there are many graphics card brands and models on the market, how to distinguish the good from the bad when choosing a graphics card? In the graphics card parameters, you can generally see several important parameters such as the graphics chip, video memory capacity, graphics card bit width, core frequency, and video memory frequency, which are the core parameters that determine the performance of the graphics card. Therefore, we can judge whether the graphics card is good or bad by these parameters.

1. Display chip.

The graphics chip is the core chip of the graphics card, which is mainly used to process the first-class information input from the system and build and render it, which directly determines the performance of the graphics card. The current graphics card chip brands are mainly NVIDIA and AMD.

Second, the core frequency.

The core frequency of the graphics card refers to the working frequency of the display core, and its working frequency can reflect the performance of the display core hole to a certain extent, but the performance of the graphics card is determined by the core frequency, video memory, pixel pipeline, pixel fill rate, etc., so in the case of different display cores, high core frequency does not mean that the graphics card has strong performance.

3. Memory bit width.

Similar to highways, the wider the road, the faster the vehicles and speeds that can pass, so the width of the memory is also an important factor in determining the performance of the graphics card. At present, the bit width of the graphics card generally reaches 128bit, and some better graphics cards reach 256bit, or even 512bit.

4. Video memory capacity.

Video memory capacity is the amount of local video memory on the graphics card, which determines the ability of the video memory to store data temporarily, so it will also affect the performance of the graphics card to a certain extent. Currently, most of the video memory capacities are 2GB, 3GB, and 4GB.

Note: A larger memory capacity does not necessarily mean that the graphics card will perform higher, because the three factors that determine the performance of a graphics card are the graphics chip first, the memory bandwidth (which depends on the memory bit width and memory frequency), and finally the memory capacity.

Generally speaking, it is reasonable to match the performance of the graphics core, and the higher the performance of the display chip, the higher the processing power, the higher the memory capacity should be correspondingly larger.

5. Video memory frequency.

The memory frequency refers to the frequency at which the graphics card is working on the graphics card by default, measured in MHz (megahertz). To a certain extent, the frequency of the video memory reflects the speed of the video memory. The memory frequency is related to the memory clock cycle, and the two are reciprocal, that is, the memory frequency = 1 memory clock cycle.

6. Video memory type.

The mainstream graphics card memory type is GDR5, some old graphics cards or entry-level graphics cards, the performance of the GDR3 video memory type is relatively poor, try to choose the mainstream graphics card type.

Summary: First look at the display chip brand and core frequency; Then look at the memory bandwidth, generally the larger the better; After that, check the memory capacity, and it is reasonable to match the performance needs of the graphics core. Continue to check the frequency and type of video memory, etc., it is recommended to choose GDR5 mainstream graphics card.

1. Memory bit width: The memory bit width is the number of bits of data that can be transmitted in a clock cycle, and the larger the number of bits, the larger the amount of data transmitted in a short period of time, so video memory is one of the important parameters of the graphics card. There are 64 bits, 128 bits, 256 bits, and 512 bits of memory width.

It is not difficult to understand that the higher the memory width, the stronger the strength of the graphics card.

2. Frequency: Frequency is the speed at which data can be processed, and it is the speed at which data can be exchanged with the GPU, in ns or MHz (conversion formula: 1ns=1000 1MHz, 2ns=1000 2MHz, and so on), the faster the frequency of the video memory, the greater the number of channels, the larger the amount of data that can be processed at the same time, and the better the performance of the whole graphics card.

3. Memory bandwidth: Memory bandwidth has a significant impact on the performance of the graphics card. It is one of the indicators to measure the data transfer rate between the display chip and the video memory, generally speaking, the larger the bandwidth, the faster the data transmission speed, measured in byte seconds.

At the same frequency, the higher the bandwidth of the graphics card, the stronger the performance.

4. Stream processor unit: Now, the number of stream processors has become a very important indicator to determine the performance of the graphics card, NVIDIA and AMD-ATI are also constantly increasing the number of stream processors of the graphics card to make the performance of the graphics card grow by leaps and bounds, all data have a commonality, the larger the number, the better the proof of things.

5. Judging according to the model of the graphics card: After you know the model of the graphics card, you can directly view your graphics card ranking through the results that have been evaluated. You can read the relevant content by searching for the graphics card ladder diagram in it.

6. Heat dissipation of the graphics card: The heat dissipation of the graphics card is a very important indicator of the graphics card, if the heat dissipation is not good, no matter how good the configuration is, it will not help, so the heat dissipation determines whether other performance indicators of a graphics card are available to a certain extent. The main parameters of the cooling fan of the graphics card are all-solid-state capacitors, copper tubes, fan size, etc.