Samsung DDR3 4GB 1333MHz DDR3-1333, M378B5273DH0-CH9 The Samsung UDIMM with manufacturer reference M378B5273DH0-CH9 is a unbuffered DIMM non-ECC DDR3 1333MHz 240Pin with 4GB capacity (512Mx64). It is organized with 16 FBGA(78ball) 256Mx8 DRAM.