G.SKILL RipjawsX Series 16GB (2 x 8GB) 240-Pin DDR3 SDRAM DDR3 1866 (PC3 14900) Desktop Memory Model F3-14900CL10D-16GBXL 16GB DDR3 PC3-12800 Dual channel kit 2x8GB 1866MHz CL10 (10-11-10-30) For Intel Z77, Z68 and P67 platforms 240 pins - 1.5V