With the TruDDR4 memory, you get the fastest possible speeds out of the memory subsystem and fully supported by Lenovo. 288-pin for enhanced, dependable system performance with maximum usability Server device support for your ram module to allow maximum efficiency and dependability 1 x 16GB modules for enhanced memory reliability and productivity Up to 2666 MHz speed for playing the latest games and using heavy software RDIMM form factor with 288-pin and 16 GB memory size effectively lessens the electrical load on the memory controller to allow maximum feasibility 16 GB capacity is enough to execute all memory hungry programs simultaneously Registered signal processing provides reliable optimization for your required applications to allow maximum usability 288-pin DDR4 SDRAM interface multiplexes 2-bit data from memory cell and I/O buses to minimize processor idle time and enhance your computers performance CL19 CAS latency for faster, dependable clock cycles which allows quick access and retrieval of data and information Enables efficient and smooth execution of all your heavy-duty applications with maximum productivity