G.Skill F4-4000C17D-16GTZR TridentZ RGB, Capacity 16GB (2 x 8GB), 288-Pin DDR4 SDRAM, Speed DDR4 4000 (PC4 32000), CAS Latency 17, Timing 17-17-17-37, Voltage 1.35V, Non ECC, Unbuffered, Dual Channel Kit, Black, Heat Spreader, LED Color RGB, Non Fan Included. A completely exposed light bar with vibrant RGB LEDs, merged with the award-winning Trident Z heatspreader designed, and constructed with the highest quality components, the Trident Z RGB DDR4 memory kit combines.