8GB, SRx8 DIMM, Single Rank DDR4 SDRAM 2666 MT/S (PC4-21300 ),2,666 MHz,CL19 latency VOLTAGE 1.2V , PIN COUNT-288-pin Buffered DIMM Desktop SDRAM,Compatible with systems that take DDR4 2666MT/s UDIMM memory, also with OEM systems and warranties Speeds up to 3200 MT/s and faster data rates are expected to be available as DDR4 technology matures Increase bandwidth by up to 32 per cent Reduce Power consumption by up to 40 percent