16GB 2x8GB DDR3L 1600 RAM Memory for iMac Mac mini MacBook Pro Upgrade Kit | eBay
OWC 16GB PC21300 DDR4 2666MHz SO-DIMM Memory Compatible with Mac Mini 2018, iMac 2019 and up, and Compatible PCs (OWC2666DDR4S16G) at Amazon.com
iMac RAM upgrade: Here's an affordable way to improve multitasking - CNET
Can you upgrade the RAM in the 27-inch iMac? | iMore
iMac Pro Memory Maxxer RAM Upgrade Kit
How to upgrade RAM in the (Mid 2017) 5K iMac and save up to ~$900 [Video] - 9to5Mac
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
How to EASILY Upgrade RAM in any Apple iMac! - YouTube