How to Install RAM in an iMac: 5 Steps (with Pictures) - wikiHow
iMac RAM upgrade: Here's an affordable way to improve multitasking - CNET
How (And Why) To Install More RAM In Your iMac
2GB DDR2-667 (PC2-5300) RAM Memory Upgrade for The Apple iMac 7,1 (20-inch, 2.0GHz, MA876LL/A) Intel Core 2 Duo (Genuine A-Tech Brand) at Amazon.com
16GB 2 x 8GB 1866 1867 MHz PC3-14900 Memory RAM for Late 2015 APPLE iMac 5K 17,1 | eBay
2020 5K iMac RAM Upgrade Guide - Save $2100 on 128GB! - YouTube
iMac with Retina 5K Display 2014/2015 Memory Upgrades
Amazon.com: OWC 32GB (2 x 16GB) PC19200 DDR4 2400MHz SO-DIMMs Memory Compatible with Mac Mini (Late 2018), 27" and 21.5" iMac (Mid 2017), and Compatible PCs (OWC2400DDR4S32P) : Everything Else
The New 2017 iMac: Notes & Tidbits on RAM - The Mac Observer
64GB Memory Upgrade for 2019-2020 Apple iMac (27-inch)