A graphic card ise required when using heavy graphics functions such as playing video games etc. It may become necessary to update the graphics card of a computer if there are problems with playing video intensive applications or games. Updating the graphic card driver is one method to solve the problem. It is easy to find out the model of the graphics card installed through the hardware settings tab of the Windows operating system. For ATI and NVIDIA graphic cards, it is possible to download graphic cards device drivers for free from the ATI and NVIDIA official websites.