A friend of mine gave me an old computer that im going to be using for playing old games and i am going to upgrade a couple things and am not sure how to check what type of video card to put in it i know its AGP but not sure if there is a difference between 2X/4X and 4X/8X so is there a difference between the two and if so can a 2/X/4X work in a 4/X8X and if not is there a way to check what it is the computer doesnt have a hdd so i cant boot into an OS and check