G.SKILL F3-1600C9D-16GXM Ripjaws X Series 16GB (2 x 8GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Memory Type: DDR3 Capacity: 16GB (8GBx2) Tested Latency: 9-9-9-24-2N Tested Voltage: 1.50v Tested Speed: 1600MHz