The Corsair CMX16GX3M4A1333C9 XMS3 Desktop Memory Kit for Intel and AMD dual channel memory processors features 16GB (4x 4GB) fast DDR3 memory modules. The XMS3 family is Corsair's mainstream line of performance DDR3 memory. The modules in the Corsair CMX16GX3M4A1333C9 XMS3 Desktop Memory Kit allow users to experience outstanding memory performance and stability. Available in Corsair's XMS heat spreaders, each module is built using carefully selected RAMs.