I am using Dell inspirion i3 3593 laptop. It has 4 GB DDR4 2666 Mhz ram. In bios, it's written that, it has DDR4 SDRAM memory technology. I am thinking to add a TEAM ELITE 8GB DDR4 2666MHz ram. So in total it will be 12 GB ram.. Now, will a DDR4 ram work alongside a ddr4 sdram?