Crucial Memory Bundle with 64GB (1 x 64GB) DDR4 PC4-25600 3200MHz Registered Server Memory (1 x CT64G4RFD432A) at Amazon.com
64GB Kit (2 X 32GB) Memory for Lenovo ThinkPad X1 Extreme DDR4 2666MHz SoDIMM Memory (PARTS-QUICK Brand) at Amazon.com
ddr4 2666 64gb | Newegg.com
Amazon.com: HyperX Fury 64GB 2666MHz DDR4 Ram CL16 DIMM (Kit of 2) Black Desktop Memory with low-profile heat spreader (HX426C16FB3K2/64) : Everything Else
DATARAM 64GB (2 x 32GB) 2666MHz DDR4 PC4-21300 SO-DIMM 260 Pin Memory Upgrade for 2018 Mac Mini (macmini18,1), 2019 27 inch iMac (iMac19,1) and PC laptops at Amazon.com
256GB 4x64GB DDR4-2666 LRDIMM 4Rx4 Memory for KNPA-U16 EPYC 7000 Series by Nemix Ram at Amazon.com
v-Color 64GB(2x32GB) DDR4 2666Mhz RAM for iMac 2020 & 2019 27-inch w/Retina 5K Display iMac SODIMM Non ECC CL19 1.2V (TN432G26D819K-VC) at Amazon.com