A:AnswerHello,
Yes this system can run Call of Duty games. For the newer ones it may have a hard time running them with high FPS. We are unable to provide specific FPS numbers as that is dependent on the in game settings.
A:AnswerHello,
No you cannot connect a monitor to the top area of the back (the motherboard). All monitor connections should be connected to the graphics card.
A:AnswerHello,
Unfortunately we are unable to specify the motherboard model as we use a variety of brands in our systems depending on what we have in stock.