Its not at all a big deal.. u can simply check out which about the video card and all other hardware on ur pc by using the device manager. To get it just right click on the my computer icon of ur computer and select manage.
More over u can use softwares like CPUz or CBid for knowing each and everything about ur computer.
To do it otherwise just open ur CPU cabinet adn find the card in the slot. I suggest for G FORCE.. its the best.