Showdown: Apple's 2015 iMac vs. 2017 iMac | AppleInsider
How fast is the SSD inside an M1 Mac? – The Eclectic Light Company
Apple IMac Late 2015 SpeedTest - 27" Retina, 1TB SSD - YouTube
Flash Storage - 2017 iMac 5K vs others
iMac 27" Late 2015 A1419 4K - SLOW Fusion hard drive replacement with new internal SSD, MUCH FASTER! - YouTube
How to use an NVMe drive to upgrade your Mac's SSD | AppleInsider
New 2TB SSD in the iMac! Upgrade kit from OWC is awesome! : r/mac
How-To: Now's the right time to swap your old iMac's hard drive for a fast new SSD - 9to5Mac
How to Install/Upgrade the PCIe SSD in a 27-inch iMac (Late 2014 - Mid 2015) iMac15,1 - YouTube
Memory Upgrades for iMac w/ Retina 5K Display Late 2015
iMac 5K late 2015 SSD Benchmark wow this thing is fast - YouTube
SSD Upgrades for Apple iMac 27-Inch Late 2013 - 2019
Amazon.com: USB C 3.2 Gen SSD Enclosure for 12+16 PIN MacBook Air/Pro SSDs,MacBook SSD Enclosure Supports for 2013-2017 MacBook Air, 2013-2015 MacBook Pro Retina, 2013-2014 iMac, 2013 Mac Pro, 2014 Mac Mini : Electronics