8GB Memory for Razer Blade 15 (2018) DDR4 2667MHz SODIMM RAM (PARTS-QUICK Brand) at Amazon.com
Arch Memory 8GB 260-Pin DDR4 2667 MHz So-dimm RAM for Razer Blade 15 (2019) Advanced RZ09-03138 at Amazon.com
8GB DDR4 2666 2667 MHz SODIMM Mac Memory RAM for APPLE iMac 2019 5K Retina A2115 | eBay
Apple Memory Module 16GB DDR4 2666MHz SO-DIMMS (2x8GB) - Apple
2x 16GB RAM 32GB DDR4 2666 2667 Mhz Apple iMac 5K 2019 2020 19,1 19,2 SO DIMM 4260580370832 | eBay
Timetec 32GB KIT(2x16GB) Compatible for Apple DDR4 2666MHz / 2667MHz for Mid 2020 iMac (20,1/20,2) / Mid 2019 iMac (19,1) 27-inch w/Retina 5K, Late 2018 Mac Mini (8,1) PC4-21333 /PC4-21300 MAC RAM at Amazon.com
OWC 128GB (4 x 32GB) PC21300 DDR4 2666MHz 260pin SO-DIMMs Memory Ram Upgrade Compatible with 27" iMac w/Retina 5K (Early 2019 and up) and Compatible PCs (OWC2666DR4S128S) at Amazon.com
8GB DDR4 2666 2667 MHz SODIMM Mac Memory RAM for APPLE iMac 2019 5K Retina A2115 | eBay
64GB Kit 2x 32GB DDR4 2666 2667MHz Memory RAM for APPLE MAC MINI Late 2018 A1993 | eBay