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The graphics card is a vital performance component of your computer, particularly if you play 3D games, or work with graphics and video content. The graphics card sits in an expansion card slot in your PC and it is specifically designed to process image data and output it to your monitor, enabling you to see it. A graphics card works by calculating how images appear, particularly 3D images, and renders them to the screen. 3D images and video images take a lot of processing capacity, and many graphics processors are complex, require fans to cool them and need direct power supply. The graphics card consists of a graphics processor, a memory chip for graphics operations, and a RAMDAC for display output. It may also include video capture, TV output and SLI and other functions. Business - Click the link on the left to visit our partner sites under business/finance/loan/mortgage category Computers - Click the link on the left to visit our partner sites under computer hardware/software/peripheral category Internet - Click the link on the left to visit our partner sites under webhosting/webdesign/internet marketing category Software - Click the link on the left to visit our partner sites under software category Web Design - Click the link on the left to visit our partner sites under web design/development category Web Hosting - Click the link on the left to visit our partner sites under web hosting category Web Promotion - Click the link on the left to visit our partner sites under search engine optimization/internet marketing category Web Resources - Click the link on the left to visit our partner sites under other web category Recreation - Click the link on the left to visit our partner sites under travel/hotel/cruise category Casino - Click the link on the left to visit our partner sites under online gambling/poker/blackjack/roulette category Health - Click the link on the left to visit our partner sites under online pharmacy/hospital/health category Shopping - Click the link on the left to visit our partner sites under online shopping/gift category Miscellaneous - Click the link on the left to visit our partner sites under all other categories
The first decision you need to make is whether you need a graphics card for handling 3D images or whether you are simply requiring 2D image rendering. For 2D requirements, you need only a low-cost solution. In many cases, an integrated graphics solution will suffice for 2D applications. However with 3D graphics, the performance of the graphics card will impact directly on the frame rate and image quality of 3D programs and games. The differences between the low and high-end cards can be substantial, both in cost and performance. Rendering 3D graphics is like lighting a stage, both the geometry of the shapes in question and the lighting of it need to be taken into account. The geometry of an image calculates the parts of an object that can and can't be seen, the position of the eye and its perspective. The lighting is a calculation of the direction of the light sources, their intensities and the respective shadows that occur. The second part to presenting a 3D image is the rendering of colours and textures to the surfaces of the objects, and modifying them according to light and other factors. |
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