What does the 1Rx8 mean vs. 2Rx8 for RAM and are they compatible? (5 Solutions!!) - YouTube
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
Can single rank (1Rx8) and dual rank (2Rx8) ram be used together ? - CPUs, Motherboards, and Memory - Linus Tech Tips