2-Power 4GB DDR3 1600MHZ - ECC - Low Voltage 1.35 - 1.5V - CL11 - UDIMM
2-Power 8GB DDR3 1600MHZ - ECC - Low Voltage 1.35 - 1.5V - CL11 - UDIMM
Samsung 8GB DDR3 1600MHZ - ECC Registered - Low Voltage 1.35 - 1.5V