Mixed Lot of 2 Kingston SK Hynix 4GB 2rx8 1rx8 PC3L-12800S RAM Memory | eBay
Single vs Dual Rank DD4. What is the performance difference between running 4x(GB) 1Rx8 vs 2x(GB) 2Rx8, given all other variables are equal? - Quora
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