A graphics card is one of computer hard drive that arranges the videos and pictures that show up in your computer. So, the picture quality of your movies you watched or games you played are determined by your graphics card. The graphics card or often also called video card is placed and attached inside the motherboard. It has to be placed fit and securely in the motherboard. It is very important because your graphics is determined by video card. » Read more: Upgrading the Graphics Card