DDR5 Demystified - Feat. Samsung DDR5-4800: A Look at Ranks, DPCs, and Do Manufacturers Matter?
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
Lot of 4pc Mixed 2GB 1Rx8 -2Rx8 PC2 - PC3; 1GB 2Rx16 PC2 - PC3 Laptop RAM Memory | eBay
LOT OF 30) MAJOR BRANDS 2GB DDR3 PC3-DESKTOP MEMORY RAM 2Rx8 1Rx8 | eBay