Corsair CMT16GX3M4X2133C9 Dominator 16GB DDR3 2133 MHz (PC3-17066) Desktop Memory Density: 16GB (4x4GB Module) Speed: PC3-17066 (2133MHz) Timing: 9-11-10-27 Type: DDR3 Quad Channel XMP: version 1.3 Memory Type: DDR3; Speed: 2133MHz