A video cared or graphic card is a device that allows for the visualization of images on your computer monitor. Without the card you would not able to view images, you can’t play games or see colors in your computer. The main purpose of video card is to generate and output image to a display. Each motherboard supports only a limited range of video card formats so always check with your motherboard manufacturer before making a purchase. If you have little bit knowledge, you may just cine home with correct video card. There are sixty types of video cards that range in price and specifications. If you are going to purchase a video card you should know, which card is right for you, there are a few things that you must understand first. Like you know about your computer configuration, purpose and uses of the computer.
Video cards are also now being placed onto the computer motherboard to help bring the cost down on computers. When the video card is connected to a monitor, it serves as the visual link between you and your computer, allowing you to view and manage your computer’s software data. If the video card is integrated in the motherboard, it will use the computer RAM memory (lower throughput). If Ram is not integrated in the motherboard, the video card will have its own video memory which is called Video RAM or VRAM. The memory capacity of most modern video cards range from 128 MB to 2.0 GB. Since video memory needs to be accessed by the GPU and the display circuitry, it often uses special high speed or multi-port memory, such as VRAM, WRAM, SGRAM, etc. The memory clock rate in modern cards are generally between 400 MHz and 2.4 GHz.
As per power demand, the power of video cards has increased. Present fast video cards tend to consume a great deal of power. While CPU and power supply makers have recently moved toward higher efficiency, so the video card use good amount of electricity in a computer.
The three types of card slots that we will discuss further;
1. PCI Slot: The PCI slot is short for peripheral components Interconnect and is not exclusive with any one processor type. PCI was the first expansion slot made by computer manufactures but the PCI performance is limited. There are many other several value cards that offers good performance.
2. AGP Slot: The AGP slot is short for Accelerated Graphics Port. AGP has many versions and it was first designed for 3D gaming. There are two version of AGP 2.0 and 3.0 are sold, but now AGP 1.0 is no longer in use.
3. PCI Express: This is the latest slot and it is much better or much faster than PCI slot or AGP slot. The PCI express replace the PCI and AGP slots for the extended performance ability. One more important thing is that, PCI and PCI Express are not compatible and are very different products.
Before buying video card, you must also know the requirements and specifications of the CPU, that the new video card is compatible for your CPU or not. When we refer to requirements and specification, we mean the CPU type and its speed. For example 1600 MHz range is suggested for 3D gaming or graphics. For 3D gaming the minimum CPU requirement is 2.4 GHz.