02:50
Abdul Raauf
A video card is a key component to any computer, since it’s responsible with generating the output images on a specific display. Also known as a graphic card, video adapter, display adapter or even graphics accelerator, a video card can do amazing things.
It not only provides simple and plain images, but thanks to the nowadays techniques, it can create 3D scenes, make video captures or even connect more than two monitors that share the same desktop. Computers usually have an integrated video card, which is not very powerful. But customers are free to buy new graphics chipsets to install in their computers and get a better performance.
GPU comes from “graphics processing unit”, which is a special processor meant to accelerate the graphics. It does all sorts of calculations, specially floating point types, mandatory for obtaining both 2D pictures and 3D animations. There are two main features to characterize a GPU and those would be the clock frequency and the pipelines number. The frequency spreads from 250 MHz to even 4 GHz. As IT industry developed, the modern graphics processors can be fully programmed.
Firmware
This one is also called video BIOS and it’s actually the core of any operation that the video card makes. The firmware, normally hidden, also transmits all the instructions that the computer and all the software running on it need.
The video BIOS can be considered a memory type, but don’t you even dare thinking to change it. Only the overclockers really specialized in video cards can make such interventions, and even so with the risk of permanently damaging the chipset.
Video memory
The video memory is a virtual storage room where all sorts of data are kept. These data need to be accessed, for example, by the GPU. Getting to this video memory in the shortest time possible is crucial for a proper functionality of the graphics, so special communication means are used. What matters most is that this type of memory has various capacities in between 128 MB and 4 GB.
RAMDAC
RAMDAC is the abbreviation from a specific type of random access memory, responsible with making the necessary conversions for the display to understand the info sent by the graphics. This is necessary because the video card works with digital signals while the monitor only knows analog signals. Thanks to this RAMDAC the communication between graphics and display is possible. It is basically a sort of RAM chip, characterized by a data transfer rate and the number of bits that it processes.
Outputs
To put it simple, for dummies, any video card works with information and establishes what data needs to be transmitted to the monitor in order to display images. So it obviously works with some outputs. One would be the VGA, which is a connector. If you’re having troubles like distortions of images, some strange electrical noises or sampling errors, the video graphics array should be the first for you to suspect.
Then comes the DVI – digital visual interface – the one that makes all the associations between the pixels from the display and those from the virtual memory. The S-Video is a necessary output for making connections between the computer and any other external video source – TV or game console, it doesn’t matter. Finally the HDMI is an interface for HD multimedia, launched in 2003, necessary to make a link from your computer to a DVD player or, again, a game console. As for the display port, it’s a more recent invention that aims to replace the DVI and VGA.
It not only provides simple and plain images, but thanks to the nowadays techniques, it can create 3D scenes, make video captures or even connect more than two monitors that share the same desktop. Computers usually have an integrated video card, which is not very powerful. But customers are free to buy new graphics chipsets to install in their computers and get a better performance.
GPU comes from “graphics processing unit”, which is a special processor meant to accelerate the graphics. It does all sorts of calculations, specially floating point types, mandatory for obtaining both 2D pictures and 3D animations. There are two main features to characterize a GPU and those would be the clock frequency and the pipelines number. The frequency spreads from 250 MHz to even 4 GHz. As IT industry developed, the modern graphics processors can be fully programmed.
Firmware
This one is also called video BIOS and it’s actually the core of any operation that the video card makes. The firmware, normally hidden, also transmits all the instructions that the computer and all the software running on it need.
The video BIOS can be considered a memory type, but don’t you even dare thinking to change it. Only the overclockers really specialized in video cards can make such interventions, and even so with the risk of permanently damaging the chipset.
Video memory
The video memory is a virtual storage room where all sorts of data are kept. These data need to be accessed, for example, by the GPU. Getting to this video memory in the shortest time possible is crucial for a proper functionality of the graphics, so special communication means are used. What matters most is that this type of memory has various capacities in between 128 MB and 4 GB.
RAMDAC
RAMDAC is the abbreviation from a specific type of random access memory, responsible with making the necessary conversions for the display to understand the info sent by the graphics. This is necessary because the video card works with digital signals while the monitor only knows analog signals. Thanks to this RAMDAC the communication between graphics and display is possible. It is basically a sort of RAM chip, characterized by a data transfer rate and the number of bits that it processes.
Outputs
To put it simple, for dummies, any video card works with information and establishes what data needs to be transmitted to the monitor in order to display images. So it obviously works with some outputs. One would be the VGA, which is a connector. If you’re having troubles like distortions of images, some strange electrical noises or sampling errors, the video graphics array should be the first for you to suspect.
Then comes the DVI – digital visual interface – the one that makes all the associations between the pixels from the display and those from the virtual memory. The S-Video is a necessary output for making connections between the computer and any other external video source – TV or game console, it doesn’t matter. Finally the HDMI is an interface for HD multimedia, launched in 2003, necessary to make a link from your computer to a DVD player or, again, a game console. As for the display port, it’s a more recent invention that aims to replace the DVI and VGA.
Posted in: Computer Vidio Card
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