M378A1K43CB2-CTDForm Factor DIMM 288 PIN Total Capacity 8GB Warranty Limited Lifetime Specs DDR4 PC4-21300 ,CL=19 ,Unbuffered ,NON-ECC ,DDR4-2666 ,1.2V Samsung DDR4 DIMMs Product Highlight Series Samsung Speed 2666 MHz Voltage 1.2V DIMM Type Unbuffered Component for desktop PC`sSamsung DDR4 DIMMs Product HighlightsSpeeds start at 2133 MT/s Increase bandwidth by up to 30% Reduce power consumption by up to 40% and extend battery life Faster burst access speeds for improved sequential data throughput Optimized for next generation processors and platforms Available in modules up to 8GB and kits up to 32GB Limited lifetime warranty