We generally don’t use integrated graphics. You might not use integrated graphics. But there are more motherboards with integrated graphics sold than discrete cards, according to data published last year by Jon Peddie Research. That means you probably have friends and family buying systems with built-in graphics engines.
Guess what happens when the work day is done and you take them into battle with you through a little Enemy Territory or Company of Heroes? Poor performance likely gets them killed over and over. Talk about a real bummer. We're WoW junkies ourselves, and you can’t imagine how many of the guys blame raid wipes on the speed of their graphics cards.