Winten RAM 4GB 1333MHz PC3-10600 DDR3 CL9 DIMM Desktop Memory - LD1333-4GB CL9 DIMM,1333MHz DDR3 Ram 4GB (4GB x 1) DDR3 PC3-10600 Desktop Ram Memory Modules (DIMM, 1600MHz) Unbuffer Non-ECC CL9 Memory, CL9 - 1.5V