G.SKILL F3-17000CL9D-8GBXM RipjawsX Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 2133 (PC3 17000) Desktop Memory 8GB DDR3 PC3-17000 Dual channel kit 2x4GB, Tested Latency:9-11-10-28-2N 2133MHz CL9 (9-11-10-28) For Intel Z68/P67 platforms 240 pins 1.65V