Cause gaming for dual monitor u end up using one monitor ( except other games such as supreme commander series. ). Even if u're planning to use one screen on gaming and another for surfing or watching movie. It might not be a good choice cause everything you click your browser or your movie application, the game itself will automatically minimize back to desktop. So it is quite a hassle to do so. But then if you are using for watching movie, + surfing net or surfing net + playing facebook game or photo editing. Then it is good for you.