How to Upgrade Memory in a 21.5-inch or 27-inch iMac (Mid 2010) - YouTube
Install memory in an iMac - Apple Support
Memory Upgrades for Apple iMac 2011 Up to 32GB
Picked up this iMac (27", mid 2011) i7 @ 3.4GHz , 16 gb ram , 256 SSD in excellent condition for $210. Should I make any upgrades ? GPU, bigger SSD? Thanks : r/LukeMianiYouTube
Apple iMac 2.5Ghz i5-2400S (Mid-2011) *No HDD/RAM* – MSU Surplus Store
Timetec 16GB KIT(2x8GB) Compatible for Apple DDR3L 1600MHz for Mac Book Pro(Early/Late 2011,Mid 2012), iMac(Mid 2011,Late 2012,Early/Late 2013,Late 2014,Mid 2015), Mac Mini(Mid 2011,Late 2012) MAC RAM : Amazon.ca: Electronics
Apple iMac 21.5" Core i5 2.5 Ghz, 16GB RAM 500GB, MC309LL Mid 2011 Grade A | eBay
How to upgrade RAM on iMac 21.5" 2011 - YouTube
Apple iMac 21.5" Mid 2011 A1311 i5 2.5GHz 12 GB Ram 2TB HD Radeon HD DVD GRADE A – I.E.T. INDUSTRIAL ANTONIO PRIETO – SINCELEJO, SUCRE
32.0GB OWC Memory Upgrade Kit For 2010-2011 Apple iMac
iMac RAM upgrade: Here's an affordable way to improve multitasking - CNET