How do you find out what kind of graphics card you have?

Do you have an Intel sticker anywhere on your computer? Or an AMD sticker? If Intel, their site can detect which driver you have.

Another way

1. Press Start and go to Run (if you're using Windows XP). Or, if you're using Windows Vista or Windows 7, go to the Search box.
2. Enter "dxdiag" and then click Enter.
   

What is 'dxdiag'?
"Dxdiag" is Microsoft's multimedia test program, which will identify your graphics card or chip set.

If you already have a graphics driver installed, you can use this procedure to identify the card via the driver name.

Windows XP:
Right click "My Computer"
Click properties
Click Hardware
Click Device Manager
Click Display Adapters
It will tell you what kind of card you have.

Windows 7:
Click Start
Click Control Panel
Click System
Click Device Manager
Click Display Adapters
4 GTX 580s in Quad-Sli

More information
Try opening the run command and typing 'dxdiag' This is a diagnostic tool for direct x. Here you can see how much system ram and the speed of your CPU. It will also open a bunch of tabs for video, audio, etc., too. You will see the amount of video RAM on the video tab and the chip type (Nvidia GforceX, Intel XXXX, ATI XXXX, etc.). If your computer has win2k or XP, you have direct X. If you use your computer for gaming, you have direct X. If you have an old win98 machine, you may not have directX installed. You can go through the Device Manager to get some info, then.

More information
Depending on your Operating System, check the device manager OR right click desktop and drill down to "Properties" then select the "settings" tab, then the "advance" tab.