dedicated graphics card ?

i am buying new HP dv6-3042..it has 1gb dedicated graphics card on it and this computer has 8gb RAM….. i will buy it because i wanna play games like COD MODERN WARFARE….
so please tell me what is dedicated graphics card means??
Answer #1
Dedicated video card has its own set of RAM IC’s ranging 16MB-2GB ram, it will not use your computer RAM chips.