Hynix 16GB DDR4 PC4-19200 2400MHZ ECC REG DIMM Model HMA82GR7AFR8N-UH at Amazon.com
Crucial RAM 8GB DDR4 3200MHz CL22 (or 2933MHz or 2666MHz) Laptop Memory CT8G4SFRA32A at Amazon.com
OWC 32GB (2 x 16GB) PC21300 DDR4 2666MHz SO-DIMMs Memory, Compatible with Mac Mini 2018, iMac 2019 and up, and Compatible PCs, (OWC2666DDR4S32P) at Amazon.com
Samsung M471B5273CH0-CH9 4gb Ddr3 1333mhz Pc3-10600 204-Pin Non-Ecc at Amazon.com
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
32GB (1x32GB) DDR3-1600MHz PC3-12800 ECC LRDIMM 4Rx4 1.35V Load Reduced Server Memory by NEMIX RAM at Amazon.com
128GB (1x128GB) DDR4-2666MHz PC4-21300 ECC LRDIMM 8Rx4 1.2V Load Reduced Server Memory by NEMIX RAM at Amazon.com