Graphics Card
The images you see on your monitor are made of tiny dots called pixels. At most common resolution settings, a screen displays over a million pixels, and the computer has to decide what to do with every one in order to create an image. To do this, it needs a translator something to take binary data from the CPU and turn it into a picture you can see. This is the function of the graphics card. The graphics card connects via slot, AGP or PCI. Graphics chips often draw memory from the computer's main RAM system. Graphics cards also contain some embedded memory, which typically ranges from 128 MB (megabytes) to 4 GB (gigabytes.) The clock speed of the graphics card is the time taken for the graphics card to process and is measured in Ghertz. Brands of Graphics card include AMD and Nvidia, and the price ranges from £20-£400 depending on how good its performance is .