The Lenovo 16GB DDR4 2666MHz UDIMM Memory enables high I/O data transfer rate and reduced power consumption. With this DDR4 memory, you will achieve better performance without straining the system’s power needs..DDR4 SDRAM interface multiplexes 2-bit data from memory cell and I/O buses to minimize processor idle time and enhance your computer’s performance.16 GB capacity is enough to execute all memory hungry programs simultaneously.No matter how heavy and numerous the applications that you are using, 2666 MHz memory speed with Unbuffered signal will run them smoothly