64GB DDR4 2666 ECC REG RDIMM module
64GB Module - DDR4 - ECC - Registered - 2666MT/s - PC4-21300 - 1.2V - 1 Year Depot Carry-In Mfg. Warranty
16GB DDR4 2666 ECC Unbuffered UDIMM 2Rx8 1.2v Module
16GB Module - DDR4 - ECC - Unbuffered - 2666MT/s - PC4-21300 - 19ns CAS Latency - 1.2V