A graphics card, which is also known as a video card, display card, graphics card, or graphics adapter is a piece of hardware that is installed in a computer. It is responsible for generating all the text and pictures that are displayed on your screen. Now a days, every processor has a builtin onboard graphics card and if you want to know what graphics card you are using in Windows 8 then you have to follow certain steps:
Step 1: Right-click on the DESKTOP and select SCREEN RESOLUTION or navigate to Control panel -> Display->Change Display Settings.
Step 2: From there click to Advanced Setting. The information of the Graphics card will be shown in a new window and if you need to know more information click on PROPERTIES.