Corsair Vengeance Pro Series 8GB (2x4GB) DDR3 2133 MHZ (PC3 17000) Desktop Memory Density: 8GB (2x4GB) Speed: 2133MHz Tested Latency: 9-11-11-31 Voltage: 1.65V Format: DIMM Pin Out: 240 Pin Limited Lifetime Warranty. Memory Type: DDR3; Speed: 2133MHz