The role of graphics cards in your computer cannot be undermined, particularly if you are used to working with video contents, 3D games and graphics. These cards are well placed in an expansion card slot in a computer and are designed to process different image data and output it back to monitor. A typical GPU consists of a memory chip, graphics processor and a RAMDAC through which output is displayed. However, modern day graphics cards are known to accommodate SLI, TV output and video capture as well. If you are contemplating buying these cards, make sure that certain essential things are looked into carefully.
You first need to find out whether you need a GPU for handling 2D images or 3D images and make your decision based on it. For most 2D requirements, integrated graphics solutions will do. And for this, low-cost solutions can be sought for Video card for sale. However, if you intend to handle 3D graphics and images you may have to into higher-end cards that will offer you with better image quality and increased frame rates. Therefore, in this regard, the difference between high-end and lower-end cards can make all the difference for your purpose, both in terms of performance and cost.
The graphics cards that are seen today include an essential component called Graphics Processing Unit. This small microchip is responsible for providing memory and algorithms to process bigger and complex images. This is also intended to reduce the CPUs workload considerably and thereby enabling it to work efficiently and faster. Many graphics cards are available today that come with different processing power. They are all capable of refreshing images to greater levels and can create deep images at lower resolution, calculate shadows quickly and eliminate any possible pixilation.
Among other specifications that need to be looked into is Processor lock speed, Memory size, and Memory bandwidth. GRUs rendering capacity largely depends on Processor lock speed and this can be measured by number of pixels processed per clock cycle. The memory capacity of these cards can be up to 512MB. Greater the memory capacity better you will be served with these graphics cards and vice versa. Similarly, Memory bandwidth of graphics cards needs to be on a higher side for greater rendering speeds and for faster transfer of data.
You can also look into the Shader models in your GPU as they will control the appearance of images on the screen. They are effective in creating visual effects like fog, reflection and multi-layered shadows. The Fill Rate too needs to be looked into while buying any graphic card. It is the rate that determines the speed with which images are painted or rendered on screen. This rate is generally indicated in texels per second. Depending upon the need you need to choose a graphic card that has an appropriate Fill rate to help serve you better. Anti-Aliasing, DVI, Dual-head, SLI are other specifications that you need to look into for making a wise decision on your graphic card.