You need to find out which graphics card you have on your computer, and possibly how much memory it has.
The DirectX Diagnostic Tool can give you quick access to your graphics card information.
1. Press the Windows + R keys (Windows keyboard) or Command + R keys (Mac keyboard) to open the Run dialog box.
2. Type dxdiag in the text field, and click OK.
3. Open the Display tab in the DirectX Diagnostic Tool dialog box.
Under the Device heading, you'll be able to see information about your graphics card, including the name, manufacturer, and memory.