Crucial 16GB Kit (8GBx2) DDR4 2400 MT/s (PC4-19200) DR x8 SODIMM 260-Pin Memory - CT2K8G4SFD824A Speeds start at 2133 MT/s and faster data rates are expected to be available as DDR4 technology matures Increase bandwidth by up to 30-Percent Reduce power consumption by up to 40-Percent and extend battery life Faster burst access speeds for improved sequential data throughput Dual Ranked, low density x8, laptop memory