G.Skill Ripjaws V 64GB (2 x 32GB) DDR4-3600 PC4-28800 CL18 Dual Channel Desktop Memory Kit F4-3600C18D-64GVK - Black - Micro Center
Micron 64GB DDR4 3200 MEM-DR464MC-ER32 Server Memory
Hynix Ddr4 Ram 8gb 4gb 16gb 32gb Pc4 2133mhz 2400mhz 2666mhz 2400t Or 2133p 2666v 3200 Ecc Reg Server Memory Support X99 - Rams - AliExpress
parts-quick 64GB Memory for Dell PowerEdge R750xs Rack Server 2RX4 Compatible DDR4 ECC RDIMM 3200MHz RAM (Cascade Lake, Ice Lake & AMD CPU only) at Amazon.com