A-Tech 64GB Kit (2 x 32GB) for Lenovo ThinkSystem SR860 - DDR4 PC4-21300 2666Mhz ECC Load Reduced LRDIMM 2Rx4 - Server Specific Memory Ram (AT350960SRV-X2L1) at Amazon.com
KTH-PL432/64G - 64GB RDIMM DDR4 3200Mhz 1.2V 2Rx4 Memory for HP Servers (Equiv. HP: P07650-B21) at Amazon.com
Corsair Vengeance Performance SODIMM Memory 64GB (2x32GB) DDR4 2933MHz CL19 Unbuffered for 8th Generation or Newer Intel Core™ i7, and AMD Ryzen 4000 Series Notebooks at Amazon.com
OLOy DDR4 RAM 64GB (2x32GB) 2666 MHz CL19 1.2V 260-Pin Laptop Gaming SODIMM Upgrade for 2019/2020 iMac 27-inch with Retina 5K Display Late 2018 Mac Mini (MD4S322619MZDC) at Amazon.com