Samsung 16GB DDR4-2666 Server Memory. Brand New.. Product # M393A2G40EB2-CTD.. The Samsung 16GB DDR4 RDIMM Server Memory is a memory module with 16 GB storage capacity and a memory speed of 2666 MHz. The memory gives high-speed performance even at low power, and boosts the capabilities, improve system performance and application responsiveness... 16GB DDR4 RDIMM Server Memory