Video tutorial on how to upgrade memory on a Lenovo Z50 laptop. 10/13/2017 - 15:00 Changed 07/24/2021 - 22:26 Related tutorials Lenovo Z50 HDD/SSD upgrade guide [Video] Use PC3-12800 1600MHz DDR3L SO-DIMM modules. Max supported memory size is 16 GB, so two 8 GB modules.