02:40
Abdul Raauf
No matter whether you name them graphics cards, video adapters, display adapters, or graphics accelerator cards, they are all the same thing – video cards. Crucial devices, without whom a computer could never work. Onboard or independent, featuring 2D or 3D, their goal would be to process information and communicate with the monitor, telling him what to display in every single second.
No video card means no signal on your monitor. No signal on your monitor means nothing to do with your computer. It is simple and plain. Therefore, whether you are the type of person who tears his PC apart to make it work or not, you should have some basic notions regarding how these devices function.
Types of video cards
One general and common classification of video cards would be according with the position of the graphics inside the computer. There are the so called on – board models, or integrated ones, that are placed on the motherboard, and there are the dedicated graphics, more reliable and with an increased performance. Integrated chipsets usually work with some of the system’s RAM, reducing the overall performance and they definitely cannot support 3D applications. In comparison, the dedicated chipsets have their own processor and RAM, increasing the system’s capacities and even taking some of the processor’s tasks. They are ideal for running powerful games or handling programs that require visual effects. Another classification would be made depending on the slot type, which can be PCI Express, AGP or PCI. The express model is the fastest one, followed by AGP and obviously the less preferred being the standard PCI. However, even the latest computers are taken on the market with integrated graphics, allowing the customer to choose whether he needs a dedicated model or not and what model should it be.
One general and common classification of video cards would be according with the position of the graphics inside the computer. There are the so called on – board models, or integrated ones, that are placed on the motherboard, and there are the dedicated graphics, more reliable and with an increased performance. Integrated chipsets usually work with some of the system’s RAM, reducing the overall performance and they definitely cannot support 3D applications. In comparison, the dedicated chipsets have their own processor and RAM, increasing the system’s capacities and even taking some of the processor’s tasks. They are ideal for running powerful games or handling programs that require visual effects. Another classification would be made depending on the slot type, which can be PCI Express, AGP or PCI. The express model is the fastest one, followed by AGP and obviously the less preferred being the standard PCI. However, even the latest computers are taken on the market with integrated graphics, allowing the customer to choose whether he needs a dedicated model or not and what model should it be.
Video cards- functionality
Basically, a video card is responsible with transmitting specific information to the display about the content of every single pixel that should be displayed – and there are millions of pixels that need to be coordinated in every moment of time. Nevertheless, it could not know such things if it were not for the processor to send these data to the video card. And it is one thing to make images from binary data and a totally different challenge to create 3D images. The graphics will first establish a wire frame made from straight lines. Then it fills the pixels that remained and it adds color, texture and light. Depending on the usage, a processor might have to repeat these steps for approximately 60 times in a second. Graphics need four components for a proper functionality – a connection for data transfer and power supply with the motherboard, a processor to take all the decisions, a memory to remember the information provided and a connection with the monitor to transmit the instructions.
Basically, a video card is responsible with transmitting specific information to the display about the content of every single pixel that should be displayed – and there are millions of pixels that need to be coordinated in every moment of time. Nevertheless, it could not know such things if it were not for the processor to send these data to the video card. And it is one thing to make images from binary data and a totally different challenge to create 3D images. The graphics will first establish a wire frame made from straight lines. Then it fills the pixels that remained and it adds color, texture and light. Depending on the usage, a processor might have to repeat these steps for approximately 60 times in a second. Graphics need four components for a proper functionality – a connection for data transfer and power supply with the motherboard, a processor to take all the decisions, a memory to remember the information provided and a connection with the monitor to transmit the instructions.
Cooling devices
Every video card needs a cooling device at some point, because the numerous operations that it makes, with an incredible speed, solicit the graphics so the device itself might get warm. They work with electricity and electricity is known for its ability of converting into heat. Moreover, the heat that is not dissipated, leads to overheating and severe damages. There are heat sinks, computer fans and water block devices. The first two use air to cool your video card, while the last one works with water.
Every video card needs a cooling device at some point, because the numerous operations that it makes, with an incredible speed, solicit the graphics so the device itself might get warm. They work with electricity and electricity is known for its ability of converting into heat. Moreover, the heat that is not dissipated, leads to overheating and severe damages. There are heat sinks, computer fans and water block devices. The first two use air to cool your video card, while the last one works with water.
Posted in: Computer Hardware
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