Crucial 16GB Kit (8GBx2) DDR4 2133 MT/s (PC4-17000) DR x8 Unbuffered DIMM 288-Pin Memory - CT2K8G4DFD8213 Speeds start at 2133 MT/s and faster data rates are expected to be available as DDR4 technology matures Increase bandwidth by up to 32% Reduce power consumption by up to 40% Faster burst access speeds for improved sequential data throughput Dual Ranked, x8 based, Unbuffered DIMM