OCZ OCZ3X16002GK PC3-1280 DDR3 1600MHz Intel Extreme 2 GB Dual Channel Kit DDR3 1600MHz XMP Profile 1: 1600MHz 7-7-7-24 XMP Profile 2: 1800MHz 9-9-9-31 Intel Black XTC Heatspreader Optimized for Intel X38/X48 Chipset