Yes, it should support two sticks of 8GB memory. You should be okay buying any of the major brand memory like from Corsair, G.Skill, Micron, Kingston, etc. Just make sure you stick with the same speed as what Dell put in there (1600MHz DDR3). Also buy in a kit if you can instead of individually. Occasionally when running dual-channel RAM sticks from different manufacturing cycles, they don't always play nice together that can lead to random blue screen crashes.