Corsair Vengeance 8 GB (2 x 4 GB) DDR3 1600 MHz PC3 12800 240-Pin DDR3 Dual Channel Memory Kit 1.5V (CMZ8GX3M2A1600C9) 8GB (2x4GB) DDR3 Dual Channel Kit Speed: 1600MHz. SPD Speed : 1333MHz Timing: 9-9-9-24 Voltage: 1.5V VDIMM spec ensures compatibility with 2nd generation (Sandy Bridge) Intel Core processor family.Vengeance heat spreader for styling and performance Intel and AMD Processor platforms Memory Type: DDR3; Speed: 1600MHz