by
Leonalast update on 9/11/2004
by
Leona
last update on 9/11/2004
The plug of a display
card V RAM
Many of you might be unfamiliar with the function of a display card; actually the general function and character of a display card (or graphic card) is to display visual graphic to the monitor. This process is function by linking the motherboard to the monitor and produce graphics for the user. The quality of these graphics and speed at which they are produced are dependent on a number of factors. Some motherboards now come with graphics integrated with the motherboard and so do not require a separate graphics card.
Nowadays many people emphasize the 3D quality of a display card (which only 3D games maniacs and graphics drawers are concern), however, if the main function of your computer is entering data, the required quality of your display card can be greatly reduce, because a high quality display card is very expensive.
Display card can be introduced by the following points:
The plug of a display card can be separate into 2 main types, “AGP” and “PCI”. At present, “AGP” is more commonly used than “PCI”, this is because the linking speed is much faster and it’s more suitable for performing large quantity of 3D graphic function. That’s why PCI is gradually becoming less popular.
VRAM is a visual memory that helps to memorize visual information. The
more and faster the VRAM is, the faster and higher resolution the display card
is.
Graphic card can computerize a command sent by software, and transfer the materials back in the VRAM, in this way this could save the CPU operating resources.
The general feature of a RAMDAC (RAM Digital to Analog Converter) is to convert visual message into R.G.B (red, green, blue signals) which these signals can only be read by a display card. The refreshment rate will be higher and the picture of computer will be more stable if the frequency rate of a RAMDAC is higher.
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