G.SKILL RipjawsX Series 16GB (2 x 8GB) 240-Pin DDR3 SDRAM DDR3 2133 (PC3 17000) Desktop Memory Model F3-2133C9D-16GXH 16GB DDR3 PC3-17000 Dual channel kit 2x 8GB 2133MHz CL9 (9-11-11-31) For Intel Z68/P67 platforms 240 pins - 1.6V