Corsair CMY16GX3M2A1600C9 Vengeance Pro Series 16GB (2x8GB) DDR3 1600 MHZ (PC3 12800) Desktop Memory 1.5V Density: 16GB (2x8GB). Speed: 1600MHz Compatible with intel z68 aand intel Z77. Memory configuration is dual channel Tested Latency: 9-9-9-24. Pin Out: 240 Pin Voltage: 1.5V. Format: DIMM Limited Lifetime Warranty. Memory Type: DDR3; Speed: 1600MHz