G.SKILL F3-2133C9D-8GXL RipjawsX Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 2133 (PC3 17000) Desktop Memory 8GB DDR3 PC3-17000 Dual channel kit 2x4GB G.Skill RipjawsX Series with red aluminium heatsinks 2133MHz CL9 (9-11-11-31) 240 pins - 1.6-1.65V Suitable for AMD and Intel platforms. Intel XMP Ready