What Is A Graphics Card?

Graphics Card, also known as Video card, is an important part of the computer, undertake the task of output display graphics, for people like to play games and engaged in professional graphics design, graphics card is very important. The display chip of the mainstream graphics card is mainly made by NVIDIA and AMD. Usually, the graphics card using NVIDIA display chip is called "N Card", and the graphics card using AMD display chip is called "A Card".

Video chipset is the main Processing Unit of the graphics card, so it is also called Graphic Processing Unit (GPU). GPU was first proposed by NVIDIA when it released GeForce 256 graphics processing chip. Especially when processing 3D graphics, the GPU enables the graphics card to reduce its dependence on the CPU and do part of the work that originally belongs to the CPU. The core technologies used by GPU include hardware T&L (geometric transformation and lighting processing), cubic environment material mapping and vertex mixing, texture compression and bump mapping, dual texture four-pixel 256-bit rendering engine, etc. Hardware T&L technology can be said to be the logo of GPU.

The various 3D effects supported by the graphics card are determined by the performance of the display chip. The type of display chip used, such as NVIDIA's GT series and AMD's HD series, largely determines the quality and basic performance of the card.

There are many ways to measure the quality of a graphics card. In addition to using testing software to test and compare, there are also many indicators for users to compare the performance of the graphics card. The performance of the graphics card is mainly affected by the graphics card frequency, display memory and other performance indicators

Types Of Graphics Card

1. Integrated Graphics Card

Integrated graphics card will display chips, video memory and related circuits are done on the motherboard, and the motherboard as an organic whole. There are separate display chips for integrated graphics cards, but most of them are integrated into the northbridge chip on the motherboard. Some motherboard integrated graphics cards also have video memory installed separately on the motherboard. However, its capacity is small, the display effect and processing performance of integrated graphics card are relatively weak, and the hardware upgrade of graphics card cannot be carried out. But it is possible to exploit the potential of the display chip by adjusting the CMOS frequency or by swiping in a new BIOS file for software upgrades.


1. Low power consumption, low heat

2. Some integrated graphics card performance has been comparable to entry-level stand-alone graphics cards, so there is no need to spend extra money to buy graphics cards.


Can not replace the new graphics card, it can only and motherboard, CPU one-time change.

2. Discrete Graphics Card

Independent graphics card refers to the display chip, video memory and related circuit done separately on a circuit board, as an independent board card. It takes up an expansion slot (ISA, PCI, AGP or PCI-E) on the motherboard.


1. A separate installation of video memory, generally does not occupy the system memory.

2.  It is also much more advanced in technology than integrated graphics cards.

3.  Can get better display effect and performance than integrated graphics card.

4.  Easy hardware upgrade of graphics card.


1. The power consumption of the system is increased and the calorific value is larger.

2. You need to spend extra money to buy video cards.



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