With 16GB of DDR4 RAM, your computer is suitable for playing high-end video games or editing videos in Ultra HD. When purchasing 16GB of DDR4 RAM, make sure that your computer supports this type of memory. You can either DDR4 SODIMMs for your laptop or DDR4 DIMMs for your desktop. The clock speed, 16GB of DDR4 RAM clocked at 2,400Mhz, for example, needs to match the clock speeds supported by your motherboard.