Samsung M378A5244CB0-CTD. Component for: PC/server, Internal memory: 4 GB, Memory layout (modules x size): 1 x 4 GB. Internal memory type: DDR4, Memory clock speed: 2666 MHz, Memory form factor: 288-pin DIMM, CAS latency: 19. DDR4 memory is available as Unbuffered DIMM. Samsung DDR4 SDRAM is the new generation of high-performance, power-efficient memory. As the semiconductor memory is widely used in current generation computers, DDR4 is considered the industry standard commercial version of DRAM memory. Progressive developments in DRAM memory have resulted in newer versions operating at lower voltages, resulting in increasing levels of power savings. By leveraging the full potential of Samsung DDR4, you can increase computing performance, while consuming less energy.