G.SKILL RipjawsX Series F3-1600C9S-8GXM 8GB (1 x 8GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Speed DDR3 1600 (PC3 12800) Timing 9-9-9 Cas Latency 9 Voltage 1.5V