Kingston 32 GB DDR4-3200 MHz Reg ECC Module at Amazon.com
64GB Kit (2 x 32GB) DDR4-3200 PC4-25600 Non-ECC Unbuffered Desktop Memory by NEMIX RAM at Amazon.com
Parts-Quick 16GB Memory Compatible with Dell PowerEdge R7525 2RX8 DDR4 ECC RDIMM 3200MHz RAM at Amazon.com
G.Skill Trident Z RGB Series 16GB (2 x 8GB) 288-Pin SDRAM (PC4-25600) DDR4 3200 CL16-18-18-38 1.35V Dual Channel Desktop Memory Model F4-3200C16D-16GTZR at Amazon.com