CMS 32GB (2x16GB) DDR4 19200 2400MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Lenovo® Legion Y520 Laptop - C108 at Amazon.com
My Lenovo Y520 (i7 7700HQ, 16GB RAM, GTX 1050). 4 years old working every single day. I live in a dusty environment but it has held up pretty well. It ain't much
A-Tech 32GB (2 x 16GB) RAM for Lenovo Legion Y520 | DDR4 2400MHz SODIMM PC4-19200 260-Pin Non-ECC Memory Upgrade Kit at Amazon.com