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
Memory Scaling on Haswell-E: CPU Real World - DDR4 Haswell-E Scaling Review: 2133 to 3200 with G.Skill, Corsair, ADATA and Crucial
1x16GB vs 2x8Gb vs 4x4GB RAM in 2020 | Single Channel vs Dual Channel | 1080P, 1440p and 4K Tests - YouTube
Results from swapping the 1x16 ram that my 7i came with with 2x8 ram from my old laptop : r/LenovoLegion