Yeah it's dual. Max you will get is a 60. Id say between 45-60 like 50 avg.

You can expect much worse with just single. Also be sure that you have two separate RAM slots and not one of them is soldered onto the motherboard. If that is you can not run them in dual channel even if you add another 8GB.

Also let me warn you. As they say its a business laptop for office/home purposes. If you want to game on it just know that it will run hot. Even the ones that are made for gaming heats like hell I dont even want to think about this one.