8GB DDR3 1066Mhz PC3-8500 ECC RDIMM 4Rx8 1.5V 240pin Vlp/Micron Original Part # MT36JDZS1G72PDZ-1G1D1 capacity:8GB Manufacturer Elpida Memory Type DDR3

Manufacturer Elpida Memory Type DDR3 Capacity 8GB Data Transfer Rate 1600Mhz Bus Type PC3L-12800

Manufacturer Hynix Memory Type DDR3 Capacity 4GB  Data Transfer Rate 1600Mhz  Bus Type PC3-12800

Manufacturer Micron  Memory Type DDR4 Capacity 8GB  Data Transfer Rate 2400MHz  Bus Type PC4-19200

Manufacturer Hynix Memory Type DDR4 Capacity 4GB  Data Transfer Rate 2666MHz  Bus Type  PC4-21300

Manufacturer Heatsink Memory Type DDR4 Capacity 4GB Data Transfer Rate 2400MHz Bus Type PC4-19200

8GB DDR3 1066Mhz PC3-8500 ECC RDIMM 4Rx8 1.5V 240pin Vlp/Micron Original Part # MT36JDZS1G72PDZ-1G1D1 capacity:8GB Manufacturer Elpida Memory Type DDR3Manufacturer Micron Memory Type DDR3 Capacity 8GB Data Transfer Rate 1066Mhz Bus Type PC3 8500