What is the difference between the RAM labeled '1Rx8 PC3L-12800S-11-13-B4' (inside the laptop) and '2Rx8 PC3-12800S-11-11-F3' (planning to buy)? - Quora
Ddr3 4gb Desktop Memory 1rx8 Pc3l-12800u 1600mhz 240pins 1.35v Cl11 Dimm Ram For Amd Motherboard | Fruugo ES
2012 iMac Memory Upgrade, which memory? w/Pic | MacRumors Forums