What does the 1Rx8 mean vs. 2Rx8 for RAM and are they compatible? (5 Solutions!!) - YouTube
1Rx8 vs 2Rx8: A Detailed Comparison Guide Between the Two RAMS
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
Hynix 2GB 2Rx8 PC3-8500S-7-10-F2 Laptop RAM Memory for Apple Laptops - Check for compatibility before purchasing at Amazon.com
Sony VAIO Y Series RAM: use 2Rx8 instead of 1Rx8 | Peter's Useful Crap
What is the difference between single rank and dual rank memory? - Quora