Kingston Technology HyperX Predator 8GB Kit (2x4GB) 1866MHz DDR3 PC3-15000 CL9 DIMM Motherboard Memory XMP T2 Series KHX18C9T2K2/8X 8 GB Kit (2x4 GB Modules) of DDR3 Desktop Memory Ultra-responsive multitasking Higher performance and an overall faster system Dense heat spreader for ultimate heat dissipation Non-ECC 1866MHz 240-pin CL9 Unbuffered DIMM Intel XMP Certified Compatible - tested with all popular brands of motherboards and Reliable - 100-percent factory tested Guaranteed - lifetime warranty, free technical support