Komputerbay 12GB (3x 4GB) DDR3 PC3-17000 2133MHz DIMM with Crown Heatspreaders 240-Pin RAM Desktop Memory 11-11-11-30 XMP Ready Komputerbay 12GB (3x 4GB) DDR3 PC3-17000 2133MHz DIMM with Crown Heatspreaders 240-Pin RAM Desktop Memory 11-11-11-30 XMP Ready Non-ECC Non-parity Voltage 1.5-1.6V Comes with heatspreader for extra cooling 100% Tested and Verified