Apple Memory Module 16GB DDR4 2666MHz SO-DIMMS (2x8GB) - Apple
A-Tech 64GB Kit (2x32GB) RAM for Apple iMac & Mac Mini (2018, 2019 & 2020) | DDR4 2666 MHz SODIMM PC4-21300 / PC4-21333 260-Pin SO-DIMM Memory Upgrade at Amazon.com
Original8GB RAM DDR4 PC4-2666V-Laptop-Notebook-M471A1K43CB1-CTD for Laptop Memoria DRAM Original Stick 8G 2667mhz for Notebook 100% Original | Lazada PH
16GB DDR4 2666 2667 MHz PC4-21300 Memory RAM for APPLE MAC MINI Late 2018 A1993 | eBay
SOLVED] - CPU-Z & Hwinfo64 show DDR4-3200 clocked at 1600Mhz but Task Manager show 2666Mhz | Tom's Hardware Forum
iMac (Retina 5K, 27-inch 2020) RAM Upgrade - Ask Different
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