4GB DDR3 1600Mhz PC3-12800 ECC RDIMM 1Rx4 1.5V 240pin Hynix Original Part # HMT351R7CFR4C-PB capacity:4GB Manufacturer Samsung Memory Type DDR4

Manufacturer Samsung  Memory Type DDR4 Capacity 8GB  Data Transfer Rate 2666Mhz  Bus Type  PC4-21300

Manufacturer Samsung Memory Type DDR4 Capacity 16GB Data Transfer Rate 2400Mhz Bus Type PC4-19200

Manufacturer Hynix Memory Type DDR4 Capacity 8GB  Data Transfer Rate 2666Mhz  Bus Type  PC4-21300

Manufacturer Hynix Memory Type DDR4 Capacity 4GB Data Transfer Rate 3200MHz Bus Type PC4-25600

Manufacturer Kingston  Memory Type DDR4 Capacity 32GB  Data Transfer Rate 2133Mhz  Bus Type PC4-17000

4GB DDR3 1600Mhz PC3-12800 ECC RDIMM 1Rx4 1.5V 240pin Hynix Original Part # HMT351R7CFR4C-PB capacity:4GB Manufacturer Samsung Memory Type DDR4Manufacturer Hynix Memory Type DDR3 Capacity 4GB Data Transfer Rate 1600Mhz Bus Type PC3 12800