Crucial RAM 8GB DDR4 3200MHz CL22 (or 2933MHz or 2666MHz) Laptop Memory CT8G4SFRA32A at Amazon.com
Lenovo 16GB 3200MHZ SODIMM-US MEM BO TP at Amazon.com
G.Skill RipJaws Series 32GB (1 x 32GB) 260-Pin SO-DIMM PC4-25600 DDR4 3200 CL22-22-22-52 1.20V Single Channel Memory Model F4-3200C22S-32GRS at Amazon .com