Ballistix Tactical 8GB (2 x 4GB) 288-Pin DDR4 SDRAM DDR4 2666 (PC4 21300) Memory Model BLT2K4G4D26AFTA Cas Latency: 16 Voltage: 1.2V Buffered/Registered: Unbuffered Heat Spreader: Yes Color: Black Features: BLT2K4G4D26AFEA is a 8GB Kit consisting of (2) 4GB DDR4 desktop modules that operates at speeds up to 2666 MT/s and has a CL16 latency. It is an Unbuffered DIMM. It conforms to the industry standard DDR4 UDIMM layout of 288 pins and is compatible with systems that take DDR4 2666 MT/s UDIMM memory.