Beware of the single rank x16 RAM kits sneaked in some laptop models! The 1Rx16 modules have significantly lower bandwidth compared to the 1Rx8 variants - NotebookCheck.net News
16GB Memory Upgrade Kit (2x8GB) 1RX8 PC4-21300R
Ramaxel 8GB 1Rx8 PC4-2666V Desktop Memory Ram Tested Grade: B Lot of 2 – ASA College: Florida